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DTSTART;TZID=America/Vancouver:20231012T100000
DTEND;TZID=America/Vancouver:20231012T110000
DTSTAMP:20231006T213542Z
CREATED:20231006T213542Z
LAST-MODIFIED:20231006T213542Z
UID:6427-1697104800-1697108400@qmi.miffanytark.com
SUMMARY:CM Seminar: Lea Nienhaus – Florida State University: Stressing Halide Perovskites
DESCRIPTION:Lea Nienhaus – Florida State University\nTitle: Stressing Halide Perovskites: Nanoscale Investigation of the Properties of Perovskite Thin Films \nAbstract: Solution-processed perovskite thin films consist of small grains with a size of 20 – 2000 nm connected by grain boundaries. As a result\, there is a vast inhomogeneity in the optical and electronic properties of the different grains/GBs within one film\, which can reduce the achievable energy output. In addition\, facile ion movement under external stimuli (light or electric fields) adds additional complexity to the system. However\, solvents can also be used to change the surface doping\, which can have immense impact on energy or charge transfer at the perovskite surface. \nTo gain insight into the optoelectronic and structural response of the perovskite thin film to these external stressors present under operating conditions\, we utilize a combination of scanning tunneling microscopy (STM) and optical spectroscopy. Furthermore\, single molecule absorption STM (SMA-STM) can probe the local inhomogeneity of the surface properties of the perovskite thin film under illumination by locally mapping the additional photogenerated tunneling current. To understand whether the local changes are caused by optoelectronic changes under illumination or structural changes\, we utilize synchrotron X-ray STM (SX-STM). Pump-probe wide-angle X-ray scattering indicates the presence of lattice deformations under optical illumination\, highlighting that the photocarriers distort the lattice\, and thus\, can change the underlying density of states as observed by SMA-STM. \nSpeaker bio: Lea Nienhaus obtained her PhD from UIUC in 2015. Following her postdoc at MIT\, she transitioned to FSU in 2018. Her interests are geared towards pushing the boundaries of optical spectroscopy. Outside of lab\, you can find her playing with her cats\, biking\, swimming or cooking. Additionaly\, she enjoys shining UV lights on household objects.
URL:https://qmi.miffanytark.com/event/cm-seminar-lea-nienhaus-florida-state-university-stressing-halide-perovskites/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20231019T100000
DTEND;TZID=America/Vancouver:20231019T110000
DTSTAMP:20231013T204741Z
CREATED:20231013T204741Z
LAST-MODIFIED:20231013T204741Z
UID:6467-1697709600-1697713200@qmi.miffanytark.com
SUMMARY:CM Seminar: Marcel Franz – Quantum Matter Institute: d-mon: an improved transmon qubit based on a cuprate Josephson junction
DESCRIPTION:Marcel Franz – Quantum Matter Institute\nTitle: d-mon: an improved transmon qubit based on a cuprate Josephson junction \n  \nAbstract: Transmon qubit\, based on a superconducting Josephson junction shunted by a large capacitance\, is the workhorse component powering the majority of intermediate scale quantum computers currently in operation. I this talk I will describe a theoretical proposal for a novel transmon architecture dubbed “d-mon” that uses unconventional oxide superconductors and is designed to overcome one of the key shortcomings of the conventional transmon. The proposed d-mon architecture is based on a c-axis Josephson junction between a d-wave high-Tc cuprate and a conventional s-wave superconductor. Its chief advantage lies in the large and tunable anharmonicity of its energy spectrum that we predict should enable faster and more reliable gate operation. In contrast to some earlier cuprate-based qubit designs d-mon operates in the regime where quasiparticles are fully gapped and can be therefore expected to achieve long coherence times. \nSpeaker Bio: Marcel Franz is a Professor of Physics at The University of British Columbia and a Deputy Scientific Director of The Blusson Quantum Matter Institute. Franz is a leading expert in theories of topological quantum matter\, unconventional superconductivity and strongly correlated electron systems. His group has made a number of significant advances in these fields including the recent prediction of high-temperature topological superconductivity in twisted bilayers of cuprate superconductors. Franz has received numerous awards and recognitions for his contributions including the A.P. Sloan Fellowship (2002)\, Killam Research Fellowship (2007)\, has been elected Fellow of the APS (2014) and The Royal Society of Canada (2022). He obtained his PhD at The University of Rochester in 1994 and worked as a postdoctoral fellow and McMaster and Johns Hopkins universities before joining the faculty of The University of British Columbia in 2000.
URL:https://qmi.miffanytark.com/event/cm-seminar-marcel-franz-quantum-matter-institute-d-mon-an-improved-transmon-qubit-based-on-a-cuprate-josephson-junction/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20231024T110000
DTEND;TZID=America/Vancouver:20231024T120000
DTSTAMP:20231023T215120Z
CREATED:20231023T215120Z
LAST-MODIFIED:20231023T215120Z
UID:6593-1698145200-1698148800@qmi.miffanytark.com
SUMMARY:EDI Seminar
DESCRIPTION:Dr. Eden Hennessey\, social psychologist and EDI data specialist\, who spoke at the QMI Retreat 2023\, will present the results from the post-session survey conducted during the retreat\, which focuses on EDI priorities. \n  \nDate: Tuesday\, October 24th\, 2023\nTime: 11:00 AM – 12:00 PM \n  \nAbstract: In this talk\, Dr. Hennessey will present findings and recommendations based on data collected during QMI’s annual retreat. Were the EDI sessions valuable to the QMI community? Did attendees’ perspectives change following the EDI sessions? Come and find out! \n  \nSpeaker Bio: Eden Hennessey (she/her) is a Social Psychologist who researches and mobilizes knowledge related to diversity promotion and discrimination reduction. She is the inaugural Equity\, Diversity\, and Inclusion Data Specialist at Wilfrid Laurier University and Research and Programs Director of the Laurier Centre for Women in Science (WinS). Dr. Hennessey advocates for equity and inclusion in academia and combines arts with data to impact world-wide audiences through photo-research exhibits. \n  \nPlease email Alex Anees (alex.anees@ubc.ca) for the Zoom link.
URL:https://qmi.miffanytark.com/event/edi-seminar/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20231026T100000
DTEND;TZID=America/Vancouver:20231026T110000
DTSTAMP:20231006T211631Z
CREATED:20231006T211631Z
LAST-MODIFIED:20231006T211631Z
UID:6423-1698314400-1698318000@qmi.miffanytark.com
SUMMARY:CM Seminar: Lindsay LeBlanc – University of Alberta: Light-matter interactions in cold and ultracold neutral atomic gases
DESCRIPTION:Lindsay LeBlanc – University of Alberta\nTitle: Light-matter interactions in cold and ultracold neutral atomic gases: Applications to quantum memory and holonomic quantum operations \nAbstract: Neutral atomic gases provide fantastic opportunities for studying and controlling quantum phenomena\, ranging from many-body physics to quantum computers. In our research\, we use the well-known interactions between cold gases and electromagnetic radiation to harness various quantum degrees of freedom. Quantum memories\, used for storing and manipulating photonic signals\, will be a key component in quantum communications systems\, especially in realizing critical quantum repeater infrastructure. Cold atoms have significant potential as high performance spin-wave quantum memories\, due to the long storage times associated with low temperature and slow thermal diffusion. In our work\, we demonstrate two memory protocols in ultracold (sometimes Bose-condensed) atoms\, which hold the potential for high-performance light storage: the Autler-Townes splitting (ATS) and superradiant approaches. These methods provide a path towards practical implementations in both ground- and satellite-based quantum communications systems\, and we are working on both increasing performance and developing practical implementations. In a separate direction\, our lab also uses ultracold ensembles to study unconventional quantum gates for quantum computing. In our work on holonomic operations\, we engineer degeneracies into our system through Floquet driving\, with the goal of realizing non-Abelian geometric phases. Our experiments reveal that we indeed rotate quantum states in this degenerate manifold\, though we find that the naive expectation of geometric robustness to fluctuations is less resilient to real experimental issues than expected. We fully characterize our system in terms of its performance in realistic conditions and propose a path forward for working with holonomic operations on a variety of quantum platforms. \nSpeaker bio: Lindsay LeBlanc is an experimental atomic physicist working with ultracold atoms and quantum technologies. Lindsay earned her BSc in Engineering Physics from the University of Alberta in 2003 and her Ph.D. in Physics from the University of Toronto in 2011\, after which she joined the Joint Quantum Institute in Maryland in 2013 as a postdoctoral fellow\, before returning to join the University of Alberta where she is Canada Research Chair in Ultracold Quantum Gases and Associate Professor in Physics.
URL:https://qmi.miffanytark.com/event/cm-seminar-lindsay-leblanc-university-of-alberta-light-matter-interactions-in-cold-and-ultracold-neutral-atomic-gases/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20231102T100000
DTEND;TZID=America/Vancouver:20231102T110000
DTSTAMP:20231019T171838Z
CREATED:20231019T171838Z
LAST-MODIFIED:20231019T171838Z
UID:6558-1698919200-1698922800@qmi.miffanytark.com
SUMMARY:CM Seminar: Joe Checkelsky– Massachusetts Institute of Technology: Natural Superlattice Design of Modulated Superconductors
DESCRIPTION:Joe Checkelsky– Massachusetts Institute of Technology\nTitle: Natural Superlattice Design of Modulated Superconductors \nAbstract: Connecting theoretical models for exotic quantum states to real materials is a key goal in quantum materials synthesis.  Two-dimensional model systems have been proposed to host a wide variety of exotic phases- historically a number of techniques have been used to realize these including thin film growth and mechanical exfoliation.  We describe here our recent progress in experimentally realizing 2D model systems using bulk crystal synthesis including modulated superconducting states.  We discuss their structures and the new phenomena that they support.  We comment on the perspective for realizing further 2D model systems in complex material structures and their connections to other methods for realizing 2D systems. \nSpeaker bio: Professor Checkelsky joined the Department of Physics at MIT as an assistant professor in January 2014. He received his B.S. in Physics in 2004 from Harvey Mudd College and Ph.D. in Physics in 2010 from Princeton University. Before coming to MIT\, Professor Checkelsky did postdoctoral work at Japan’s Institute for Physical and Chemical Research (RIKEN) and held the position of lecturer at the University of Tokyo. He was promoted to associate professor in 2019 and in 2020 named a Mitsui Career Development Professor in Contemporary Technology\, an appointment he will hold until 2023.
URL:https://qmi.miffanytark.com/event/cm-seminar-joe-checkelsky-massachusetts-institute-of-technology-natural-superlattice-design-of-modulated-superconductors/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20231109T100000
DTEND;TZID=America/Vancouver:20231109T110000
DTSTAMP:20231106T165636Z
CREATED:20231106T165636Z
LAST-MODIFIED:20231106T165636Z
UID:6623-1699524000-1699527600@qmi.miffanytark.com
SUMMARY:Ars Scientia Artist Talks: Depicting the World Through the Rhythm of the Oceans by Javiera Tejerina-Risso
DESCRIPTION:How can artists introduce innovative ways of understanding our place in the planetary scheme\, while taking into consideration the diverse entities that contribute to the delicate balance of ecosystems? Some artists are exploring landscape-installations as a means to sensitize us to the simultaneity of events on a global scale\, showcasing the intricate interconnections between various ecological phenomena. They draw upon knowledge from multiple disciplines to achieve this. Scientists extend invitations to artists to collaborate within their laboratories\, fostering the emergence of cross-disciplinary and mutually enriching perspectives\, thus weaving new narratives about our world. \nDuring this talk\, artist Javiera Tejerina-Risso will share a brief overview of her previous art and science collaborations\, as well as the prospects for the Quantum residency at the QMI. \nArtist bio: Javiera Tejerina-Risso\, a French-Chilean artist based in Marseille\, France\, has a practice-based PhD from Aix-Marseille University. She participated in Bruno Latour’s Arts+Politics SPEAP Sciences Po\, Paris and has held residencies at the Ateliers de la ville de Marseille\, Espace 36\, the Djerassi Resident Artist Program\, La Cupula Mérida and IRPHE & IMER Laboratories. She is regularly invited to deliver workshops at art academies including: Ecole d’art supérieure d’Aix-en-Provence\, Ecole supérieure d’Art et de design de Toulon\, Instituto de Arte PUCV à Viña del Mar Chile\, and UNAY Mérida Mexico. In France\, her work has been shown at Les Tanneries Art Center\, La Friche de la Belle de Mai\, Variation Media Art Fair\, Objectif Vidéo Nice (OVNI)\, the 68th edition of Jeune Création\, Dos Mares in Marseille and at international festivals such as VidéoFormes\, Time is Love Screenings\, and Proyector 15\, and Sci-Art UCLA. She recently showed her work at the Bienal Tlatelolca in CDMX. Tejerina-Risso’s work unfolds in the exhibition space primarily in the form of installations and videos and engages deeply with the scientific imagination\, notably relying on the vocabulary and research in physics.
URL:https://qmi.miffanytark.com/event/ars-scientia-artist-talks-depicting-the-world-through-the-rhythm-of-the-oceans-by-javiera-tejerina-risso/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20231116T100000
DTEND;TZID=America/Vancouver:20231116T110000
DTSTAMP:20231006T212241Z
CREATED:20231006T212241Z
LAST-MODIFIED:20231006T212241Z
UID:6425-1700128800-1700132400@qmi.miffanytark.com
SUMMARY:CM Seminar: Xiaodong Xu – University of Washington: Observation of Fractional Quantum Anomalous Hall Effect
DESCRIPTION:Xiaodong Xu – University of Washington\nTitle: Observation of Fractional Quantum Anomalous Hall Effect \nAbstract: The interplay between spontaneous symmetry breaking and topology can result in exotic quantum states of matter. A celebrated example is the quantum anomalous Hall (QAH) state\, which exhibits an integer quantum Hall effect at zero magnetic field due to topologically nontrivial bands and intrinsic magnetism. In the presence of strong electron-electron interactions\, fractional-QAH (FQAH) states at zero magnetic field can emerge\, which is a lattice analog of fractional quantum Hall effect without Landau level formation. In this talk\, I will present experimental observation of FQAH states in twisted MoTe2 bilayer\, using combined magneto-optical and -transport measurements. In addition to the Chern number -1 integer\, and -2/3 and -3/5 fractional QAH states\, we find an anomalous Hall state near the filling factor -1/2\, whose behavior resembles that of the composite Fermi liquid in the half-filled lowest Landau level of a two-dimensional electron gas at high magnetic field. Direct observation of the FQAH and associated effects paves the way for researching charge fractionalization and anyonic statistics at zero magnetic field. \nSpeaker bio: Xiaodong Xu is a Boeing Distinguished Professor in the Department of Physics\, and Department of Materials Science and Engineering at the University of Washington. He obtained a PhD in Physics from the University of Michigan in 2008. After postdoc research at Cornell University\, he joined the University of Washington in 2010. He is a Fellow of American Physical Society and Optical Society of America.
URL:https://qmi.miffanytark.com/event/cm-seminar-xiaodong-xu-university-of-washington-observation-of-fractional-quantum-anomalous-hall-effect/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20231123T100000
DTEND;TZID=America/Vancouver:20231123T110000
DTSTAMP:20231106T183834Z
CREATED:20231106T183834Z
LAST-MODIFIED:20231106T183834Z
UID:6627-1700733600-1700737200@qmi.miffanytark.com
SUMMARY:CM Seminar: Jeff Sonier – Simon Fraser University: Muon Studies of Superconducting UTe2
DESCRIPTION:Jeff Sonier – Simon Fraser University\nTitle: Muon Studies of Superconducting UTe2 \nAbstract: Recently discovered UTe2 is believed to be a long-sought spin-triplet superconductor\, but its magnetic properties and superconducting order parameter are matters of controversy. The observation of a nonzero polar Kerr effect in the superconducting state of UTe2 single crystals exhibiting two phase transitions in the specific heat has been taken as evidence of a time-reversal symmetry (TRS) breaking order parameter and chiral superconductivity. Yet a more recent study of the polar Kerr effect in single crystals exhibiting a single-phase transition found no evidence for TRS breaking. Zero-field muon spin relaxation (SR) is an ideal tool for independently determining whether TRS symmetry is spontaneously broken at the superconducting transition temperature\, Tc\, but until recently it has not been possible to investigate this in UTe2 due to the presence of slowly fluctuating spins. I will first explain what SR has revealed about the magnetic interactions in UTe2\, which potentially play a role in the pairing mechanism that gives rise to spin-triplet superconductivity. I will then describe recent SR studies of a new generation of UTe2 single crystals\, which shed light on the role disorder plays in the magnetic fluctuations and have provided an opportunity to look into whether TRS is broken. \nSpeaker bio: Jeff Sonier is a Professor at Simon Fraser University.
URL:https://qmi.miffanytark.com/event/cm-seminar-jeff-sonier-simon-fraser-university-muon-studies-of-superconducting-ute2/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20231130T100000
DTEND;TZID=America/Vancouver:20231130T110000
DTSTAMP:20231124T181128Z
CREATED:20231124T181128Z
LAST-MODIFIED:20231124T181128Z
UID:6713-1701338400-1701342000@qmi.miffanytark.com
SUMMARY:CM Seminar: Nitin Kaushal – QMI: Realization of magnetically frustrated Wigner crystals and a novel multiorbital model in transition metal dichalcogenide based moiré materials
DESCRIPTION:Nitin Kaushal – Quantum Matter Institute \nTitle: Realization of magnetically frustrated Wigner crystals and a novel multiorbital model in transition metal dichalcogenide based moiré materials \nAbstract: Moiré materials constructed using the transition metal dichalcogenide (TMD) bilayers have been used to simulate the Hubbard model with long range Coulomb interactions procuring the lattice Wigner crystal states at fractional fillings like n=2/3\, 1/2\, and 1/3. We study the gamma-valley TMD homobilayers which can give rise to the effective moire honeycomb lattices\, as shown by recent ab-initio studies. We discuss the effect of Coulomb interactions in these homobilayers unveiling the plethora of frustrated magnetic states on Wigner crystals at various fractional fillings\, which suggests the latent potential of these materials to realize quantum spin liquids. Moreover\, by performing Wannierization of the moiré bands we show that these materials can realize a more general moire Kanamori-Hubbard model\, opening an avenue for physics beyond the extensively studied multiorbital Hubbard model. \nSpeaker Bio: Dr. Nitin Kaushal is a postdoctoral fellow at the Quantum Matter Institute working with Professor Marcel Franz’s group. Prior to joining UBC\, he worked as a postdoctoral researcher at the Oak Ridge National Laboratory (2020-2023. Nitin completed his PhD at the University of Tennessee in 2020\, under the guidance of Prof. Elbio Dagotto. During his Ph.D.\, he investigated the effects of atomic spin-orbit coupling on the multi-orbital Hubbard models. In recent years\, Nitin’s research has been centered on moiré materials.
URL:https://qmi.miffanytark.com/event/cm-seminar-nitin-kaushal-qmi-realization-of-magnetically-frustrated-wigner-crystals-and-a-novel-multiorbital-model-in-transition-metal-dichalcogenide-based-moire-materials/
LOCATION:McLeod 3038\, 2356 Main Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20231207T100000
DTEND;TZID=America/Vancouver:20231207T110000
DTSTAMP:20231201T230526Z
CREATED:20231201T230526Z
LAST-MODIFIED:20231201T230526Z
UID:6749-1701943200-1701946800@qmi.miffanytark.com
SUMMARY:CM Seminar: Andrea Young – University of California Santa Barbara: Magnetism and superconductivity in rhombohedral graphene multilayers: triplet superconductivity\, intervalley coherence\, and spin orbit coupling 
DESCRIPTION:Andrea Young – University of California Santa Barbara\nTitle: Magnetism and superconductivity in rhombohedral graphene multilayers: triplet superconductivity\, intervalley coherence\, and spin orbit coupling  \nAbstract: The electronic band structure of rhombohedral graphene multilayers hosts van Hove singularities at which the single particle of states diverges.  I will discuss experiments in which we use electrostatic gates to tune the chemical potential through these singularities\, revealing a cascade of correlated electron phases; notably\, both singlet and triplet superconductors are observed proximal to or within generalized ferromagnetic phases where the system spontaneously polarizes into one or more of the spin- and valley isospin flavors. I will give an overview of this system\, and describe recent experiments that reveal the role of intrinsic spin orbit coupling in graphene. \nSpeaker Bio: Dr. Andrea Young is a professor of Physics at the University of California Santa Barbara. His lab\, the Young lab\, combines nanofabrication and electronic measurement techniques in order to investigate the properties of electronic states in quantum materials\, and is currently interested in the interplay between symmetry\, topology\, and correlations in low dimensional systems.
URL:https://qmi.miffanytark.com/event/cm-seminar-andrea-young-university-of-california-santa-barbara-magnetism-and-superconductivity-in-rhombohedral-graphene-multilayers-triplet-superconductivity-intervalley-coherence-and/
LOCATION:McLeod 3038\, 2356 Main Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240110T110000
DTEND;TZID=America/Vancouver:20240110T120000
DTSTAMP:20240110T164032Z
CREATED:20240110T164032Z
LAST-MODIFIED:20240110T164032Z
UID:6810-1704884400-1704888000@qmi.miffanytark.com
SUMMARY:CM Seminar: Kaoru Yamanouchi – The University of Tokyo: Quantum computing of atomic and molecular problems
DESCRIPTION:Kaoru Yamanouchi – Institute for Attosecond Laser Facility and Department of Chemistry\, University of Tokyo \nTitle: Quantum computing of atomic and molecular problems \nAbstract: Two-dimensional analogs of metal-halide perovskites represent a promising platform for exciton-polariton-based technologies. They sustain strongly bound excitons that are stable at room temperature\, readily enabling strong light-matter coupling at ambient conditions. In the strong coupling limit\, uncoupled excitons have been mainly regarded as a reservoir for the polariton population. In this work\, we posit that there is a bidirectional interplay between the uncoupled exciton dynamics and the polariton quantum dynamics. We fabricated a Fabry-Pérot microcavity\, enclosing a two-dimensional hybrid organic-inorganic lead-iodide semiconductor\, and resolved the multi-particle correlations of exciton-polaritons — that is their population and coherence dynamics — employing excitation correlation photoluminescence and two-dimensional coherent excitation spectroscopies. We find (i) an increased exciton bimolecular scattering rate of the exciton reservoir in the microcavity relative to the bare semiconductor; (ii) ultrafast population transfer from the uncoupled exciton states and the middle polariton to the lower polariton; and (iii) two-quantum correlations between polaritons and uncoupled excitons. Our work quantifies many-body correlations between bare excitons and exciton-polaritons\, which are fundamental in mechanisms of the formation of polariton condensates. \nSpeaker Bio:Kaoru Yamanouchi  is the Director of the Institute for Attosecond Laser Facility at the University of Tokyo and a Professor at the Department of Chemistry at the University of Tokyo. His research is focused on intense laser field science\, attosecond science\, and quantum computing. \n  \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-kaoru-yamanouchi-the-university-of-tokyo-quantum-computing-of-atomic-and-molecular-problems/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240125T100000
DTEND;TZID=America/Vancouver:20240125T110000
DTSTAMP:20240109T181429Z
CREATED:20240109T181429Z
LAST-MODIFIED:20240109T181429Z
UID:6808-1706176800-1706180400@qmi.miffanytark.com
SUMMARY:CM Seminar: Carlos Silva-Acuña – Université de Montréall: Many-Body Exciton Polariton Quantum Dynamics in Optical Microcavities based on two-dimensional Metal-Halide Semiconductors
DESCRIPTION:CM Seminar: Carlos Silva-Acuña – Institut Courtois & Département de physique\, Université de Montréal \nTitle: Many-Body Exciton Polariton Quantum Dynamics in Optical Microcavities based on two-dimensional Metal-Halide Semiconductors \nAbstract: Two-dimensional analogs of metal-halide perovskites represent a promising platform for exciton-polariton-based technologies. They sustain strongly bound excitons that are stable at room temperature\, readily enabling strong light-matter coupling at ambient conditions. In the strong coupling limit\, uncoupled excitons have been mainly regarded as a reservoir for the polariton population. In this work\, we posit that there is a bidirectional interplay between the uncoupled exciton dynamics and the polariton quantum dynamics. We fabricated a Fabry-Pérot microcavity\, enclosing a two-dimensional hybrid organic-inorganic lead-iodide semiconductor\, and resolved the multi-particle correlations of exciton-polaritons — that is their population and coherence dynamics — employing excitation correlation photoluminescence and two-dimensional coherent excitation spectroscopies. We find (i) an increased exciton bimolecular scattering rate of the exciton reservoir in the microcavity relative to the bare semiconductor; (ii) ultrafast population transfer from the uncoupled exciton states and the middle polariton to the lower polariton; and (iii) two-quantum correlations between polaritons and uncoupled excitons. Our work quantifies many-body correlations between bare excitons and exciton-polaritons\, which are fundamental in mechanisms of the formation of polariton condensates. \nSpeaker Bio: Carlos Silva-Acuña is the Director of the Courtois Institute and a Professor at the Department of Physics at Université de Montréal. \n  \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-carlos-silva-acuna-universite-de-montreal-many-body-exciton-polariton-quantum-dynamics-in-optical-microcavities-based-on-two-dimensional-metal-halide-semiconductors/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240201T100000
DTEND;TZID=America/Vancouver:20240201T110000
DTSTAMP:20240130T212209Z
CREATED:20240130T212209Z
LAST-MODIFIED:20240130T212209Z
UID:6951-1706781600-1706785200@qmi.miffanytark.com
SUMMARY:CM Seminar: Hao Tjeng – Max Planck Institute: Stabilization of U 5f2 configuration in UTe2 through U 6d dimers in the presence of Te2 chains
DESCRIPTION:Hao Tjeng – Max Planck\nTitle: Stabilization of U 5f2 configuration in UTe2 through U 6d dimers in the presence of Te2 chains \nAbstract: We investigate the topological superconductor candidate UTe2 using high-resolution valence-band resonant inelastic x-ray scattering at the U M4\,5-edges. We observe atomic-like low-energy excitations that support the correlated nature of this unconventional superconductor. These excitations originate from the U 5f2 configuration\, which is unexpected since the short Te2-Te2 distances exclude Te2 being 2-. By utilizing the photoionization cross-section dependence of the photoemission spectra in combination with band structure calculations\, we infer that the stabilization of the U 5f2 configuration is due to the U 6d bonding states in the U-dimers acting as a charge reservoir. Our results emphasize that the description of the physical properties should commence with a 5f2 ansatz. \nSpeaker Bio: Prof. Tjeng has been Director and Scientifc member at the Max Planck Institute for Chemical Physics of Solids since October 2009. He is an experimental physicist and has previously been associated with the Royal Netherlands Academy of Sciences\, the Solid State Physics Laboratory\, University of Groningen\, The Netherlands\, and the University of Cologne\, Germany.
URL:https://qmi.miffanytark.com/event/cm-seminar-hao-tjeng-max-planck-institute-stabilization-of-u-5f2-configuration-in-ute2-through-u-6d-dimers-in-the-presence-of-te2-chains/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240208T100000
DTEND;TZID=America/Vancouver:20240208T110000
DTSTAMP:20240123T175112Z
CREATED:20240123T175112Z
LAST-MODIFIED:20240123T175112Z
UID:6851-1707386400-1707390000@qmi.miffanytark.com
SUMMARY:CM Seminar: James McIver– Columbia University: Ultrafast optoelectronic circuits
DESCRIPTION:CM Seminar: James McIver– Columbia University\nTitle: Ultrafast optoelectronic circuits \nAbstract: Ultrafast optoelectronic circuits offer new opportunities for investigating and controlling the electrical responses of microstructured quantum materials and heterostructures at femtosecond timescales and THz frequencies. Based on metal waveguides and laser-triggered photoconductive switches\, these chip-scale circuits can be interfaced to quantum materials to directly probe the ultrafast flow of electrical currents or perform near-field THz spectroscopy on length scales orders of magnitude smaller than the diffraction limit. \nIn this talk\, I will present on my group’s activities using these circuits to study the electrical transport properties of quantum materials driven out of equilibrium by femtosecond laser pulses [1]. In monolayer graphene\, we observe an anomalous Hall effect induced by circularly polarized light in the absence of an applied magnetic field [2]. The dependence of the effect on a gate potential used to tune the Fermi level reveals multiple features that reflect the formation of a photon-dressed\, or “Floquet-engineered”\, topological band structure. The results are a critical first step towards realizing and controlling light-induced topological edge states. I will also discuss our recent results on the Weyl semimetal Td-MoTe2\, where we observe rectified photocurrents that scale linearly with the applied laser field. This scaling violates the perturbative description of nonlinear optics/transport\, but can be explained by the formation of a photon-dressed magnetic Weyl semimetal state. \nIn the second part of my talk\, I will present on my group’s efforts in using femtosecond voltage pulses generated on-chip to probe and manipulate gate-tunable van der Waals heterostructures embedded in plasmonic cavities. We perform near-field time-domain THz spectroscopy on these cavities to study the light-matter hybridization. We observe coherent plasmon cavity modes that can be tuned from the weak to ultrastrong coupling regimes with electrostatic gating and cavity geometry. These techniques\, which we are extending to mK temperatures and strong magnetic fields\, could be used to investigate and control a wide range of topological and strongly correlated phenomena in microstructured quantum materials and heterostructures that fall on the THz/meV energy scale.
URL:https://qmi.miffanytark.com/event/cm-seminar-james-mciver-columbia-university/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240214T100000
DTEND;TZID=America/Vancouver:20240214T110000
DTSTAMP:20240122T231436Z
CREATED:20240122T231436Z
LAST-MODIFIED:20240122T231436Z
UID:6843-1707904800-1707908400@qmi.miffanytark.com
SUMMARY:Unboxing Quantum 2024: Navigating the Nanoscale for Novel Applications
DESCRIPTION:Mark your calendars for a journey into the microscopic realm of quantum technologies with the inaugural event of the 2024 Unboxing Quantum Series: Navigating the Nanoscale for Novel Applications. \nCo-hosted by the Stewart Blusson Quantum Matter Institute (Blusson QMI) and UBC Advanced Nanofabrication Facility (ANF)\, the event takes place virtually from 10:00 am to 11:00 am (PT) on February 14\, 2024. \n \nModerated by Blusson QMI Postdoctoral Fellow Kirsty Gardner\, the panel features speakers active in academia and industry\, providing the quantum community with an insider’s perspective on the research and development partnerships shaping the future of BC and Canada. \nSpeakers: \n– Pinder Dosanjh\, Facilities Director\, Quantum Collaboratory (BC node)\, Blusson QMI \n– Carlos Gerardo\, Director of R&D\, Sonus Microsystems \n– Matthew Mitchell\, Photonic Integration Lead\, Dream Photonics \nUBC’s ANF is a world-leading device manufacturing facility bringing together partners from across academia\, industry and government to reinforce Canada’s position as a leader in developing next-generation quantum devices and technologies. Both Sonus Microsystems and Dream Photonics are users of the ANF. \nWe encourage you to prepare any questions you may have\, as the event will include a Q&A session with our panelists. We look forward to your participation in what promises to be an insightful event. \nRegistration is free with limited capacity – secure your spot today! \nRegister here
URL:https://qmi.miffanytark.com/event/unboxing-quantum-2024-navigating-the-nanoscale-for-novel-applications/
ATTACH;FMTTYPE=:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240215T100000
DTEND;TZID=America/Vancouver:20240215T110000
DTSTAMP:20240123T175412Z
CREATED:20240123T175412Z
LAST-MODIFIED:20240123T175412Z
UID:6853-1707991200-1707994800@qmi.miffanytark.com
SUMMARY:CM Seminar: James Analytis – UC Berkley: Frustrated Quantum Devices: understanding how correlations\, complex order and boundary states manifest in novel material functionalities
DESCRIPTION:CM Seminar: James Analytis – UC Berkley \nTitle: Frustrated Quantum Devices: understanding how correlations\, complex order and boundary states manifest in novel material functionalities \nAbstract: Materials at the boundary of critical phase transitions are of significant fundamental interest\, not least due because of their connection to unconventional superconductivity and quantum magnetism. One characteristic of such systems is the presence of coupled order parameters that underlie these phase transitions. Here\, we explore how this coupling manifests in the response of these materials when driven out of equilibrium by applied currents. We demonstrate how magnetic and charge textures can be electrically manipulated\, suggesting possible applications for exotic materials in spintronics technologies. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-james-analytis-uc-berkley-frustrated-quantum-devices-understanding-how-correlations-complex-order-and-boundary-states-manifest-in-novel-material-functionalities/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240221T080000
DTEND;TZID=America/Vancouver:20240223T170000
DTSTAMP:20240206T170514Z
CREATED:20240206T170514Z
LAST-MODIFIED:20240206T170514Z
UID:7074-1708502400-1708707600@qmi.miffanytark.com
SUMMARY:Quantum Days
DESCRIPTION:Quantum Days 2024 \nThis February\, Quantum Days 2024 will convene Canada’s quantum community to discuss the latest discoveries at the forefront of quantum research\, explore real-world applications\, and engage with government and industry leaders driving quantum advancements across various sectors. This year’s event is hosted in the city of Calgary and runs from February 21 to 23. \nOn February 21\, from 11:10am to 12:10pm (MST)\, Blusson QMI Investigator Ziliang Ye will speak as part of a panel discussion on the role of quantum materials in the development of quantum science and technology. \nOn February 22\, from 2:30pm-3:30pm (MST)\, Blusson QMI Investigator Joseph Salfi will be part of a quantum showcase session on the cutting-edge advancements\, breakthroughs\, and insights shaping Canada’s quantum landscape. \nA Poster Prize Ceremony will take place on February 23 from 12:00pm to 12:15pm (MST). The prizes will be presented by Mitacs CEO John Hepburn and Poster Session Chair Ziliang Ye. \nLearn more about the event here. \nTicket sales for Quantum Days 2024 will close on February 13 – to register\, please see here.
URL:https://qmi.miffanytark.com/event/quantum-days/
LOCATION:City of Calgary\, Calgary\, Alberta\, Canada
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240222T130000
DTEND;TZID=America/Vancouver:20240222T140000
DTSTAMP:20240228T191907Z
CREATED:20240228T191907Z
LAST-MODIFIED:20240228T191907Z
UID:7101-1708606800-1708610400@qmi.miffanytark.com
SUMMARY:CM Seminar: David Goldhaber-Gordon – Stanford University: Electrons in twisted layers: design\, surprise\, and a new set of eyes
DESCRIPTION:David Goldhaber-Gordon – Stanford University\nTitle: Electrons in twisted layers: design\, surprise\, and a new set of eyes \nAbstract: When two atomically-thin layers of a material are stacked one atop each other\, with a relative twist angle between them\, properties can emerge that bear little resemblance to the behavior of the individual layers. Though much can be predicted and designed about such structures\, I will share two vignettes about how my students aimed for a particular behavior but found something quite different. The first led to the discovery of the first experimentally-known “orbital magnet”\, a ferromagnet in which the tiny microscopic magnets that align with each other are not electron spins but tiny circulating current loops. The second surprise was observation of resistance that skyrocketed with the application of a magnetic field\, along with other striking electronic properties — this one took years to figure out\, but we’ve recently explained it. \nEach of these two surprises turned out to be caused by a structural feature of the layered stack which had not previously been considered important. Finally\, I’ll describe a refined approach to stacking and a newly-developed technique for mapping the structure of twisted layers\, which together might help us get more repeatable control of structure and thus electronic properties in such twisted systems.
URL:https://qmi.miffanytark.com/event/cm-seminar-david-goldhaber-gordon-stanford-university-electrons-in-twisted-layers-design-surprise-and-a-new-set-of-eyes/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240229T100000
DTEND;TZID=America/Vancouver:20240229T110000
DTSTAMP:20240214T190047Z
CREATED:20240214T190047Z
LAST-MODIFIED:20240214T190047Z
UID:7086-1709200800-1709204400@qmi.miffanytark.com
SUMMARY:CM Seminar: Ania Bleszynski Jayich – University of California Santa Barbara: Quantum sensing in the solid-state: from one spin to many spins
DESCRIPTION:CM Seminar: Ania Bleszynski Jayich – University of California Santa Barbara\nTitle: Quantum sensing in the solid-state: from one spin to many spins \nAbstract: Sensors that leverage quantum phenomena to measure physical quantities harbor many attractive features beyond classical sensors. Solid-state quantum sensors\, with the nitrogen-vacancy (NV) center in diamond a forefront technology\, are particularly attractive for their compatibility with biological and condensed matter systems\, offering ultra-high spatial resolution and sensitivity over a wide temperature range\, while being quantitative and non-invasive. Here I first present our group’s work on NV-center-based scanned probe imaging of electron flow patterns in graphene\, revealing the presence of hydrodynamic electron flow. A frontier of quantum sensing is the utilization of entangled quantum sensors for metrological advantage\, a goal not yet realized in the solid-state. I also discuss our group’s progress towards realizing novel many-body states of entangled spins\, both diamond-based qubits and novel chemically-assembled molecular spin systems. \nSpeaker Bio: Ania Bleszynski Jayich is a professor of physics at the University of California Santa Barbara\, where she holds the Bruker Endowed Chair for Science and Engineering\, the Elings Endowed Chair for Quantum Science\, and is co-director of the Quantum Foundry\, an NSF Q-AMASE-I center. Her research interests include quantum assisted sensing and imaging on the nanoscale\, spin-coupled optomechanics\, and hybrid quantum systems for sensing and quantum information. Before coming to UCSB\, Ania was a postdoctoral researcher at Yale University\, and received her PhD in physics from Harvard in 2006 and a B.S. in physics and mathematical and computational science from Stanford in 2000. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-ania-bleszynski-jayich-university-of-california-santa-barbara-quantum-sensing-in-the-solid-state-from-one-spin-to-many-spins/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240314T100000
DTEND;TZID=America/Vancouver:20240314T110000
DTSTAMP:20240228T194842Z
CREATED:20240228T194842Z
LAST-MODIFIED:20240228T194842Z
UID:7121-1710410400-1710414000@qmi.miffanytark.com
SUMMARY:CM Seminar: Kamran Kamiri – National Centre for Nuclear Research\, Poland: Multiscale Modeling of Mechanical Deformation in Chemically Complex Alloys
DESCRIPTION:Kamran Kamiri – National Centre for Nuclear Research\, Poland\nTitle: Multiscale Modeling of Mechanical Deformation in Chemically Complex Alloys \nAbstract: In my presentation\, I will give an overview of three primary areas that have been my focal research interests at NOMATEN CoE: i) crystal and amorphous plasticity\, ii) transport properties of high-entropy alloys (HEAs)\, and iii) micro-structural informatics. In i)\, my research has employed statistical physics to unravel the microscopic basis of plasticity based on the collective dynamics of shear transformation zones in amorphous solids as well as dislocations mechanics in crystalline metals. Within the context of HEAs\, my focus has been on the role of chemical complexities (i.e. local disorder/ordering) investigating their impact on alloy strengths. In ii)\, I have explored the sluggish diffusion of defects in HEAs and its impact on thermo-mechanical properties. In the area of micro-structural informatics in iii)\, I have utilized the power of machine learning (ML) and graph neural networks GNNs to infer (hardness) properties solely based on the (surface) microstructural information. Building upon these achievements\, we are currently expanding the scope of the above studies by i) employing ML to identify relevant microstructural metrics for predicting bulk plastic properties in bulk metallic glasses as well as HEAs within the microstructure-property paradigm\, ii) utilizing machine-learned interatomic potentials for accelerated material discovery\, and iii) extending the GNN’s capabilities to infer microstructural signatures and defects based on micro/nano mechanical response (as input data) in different metallic systems and distinct alloy compositions. \nSpeaker Bio: Kamran Karimi is a computational materials physicist working at the National Centre for Nuclear Research\, Otwock Poland. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-kamran-kamiri-national-centre-for-nuclear-research-poland-multiscale-modeling-of-mechanical-deformation-in-chemically-complex-alloys/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240321T100000
DTEND;TZID=America/Vancouver:20240321T110000
DTSTAMP:20240214T191126Z
CREATED:20240214T191126Z
LAST-MODIFIED:20240214T191126Z
UID:7089-1711015200-1711018800@qmi.miffanytark.com
SUMMARY:CM Seminar: Janez Bonca – University of Ljubljana: Equilibrium and far-from-equilibrium properties of bipolaron coupled to dispersive phonons
DESCRIPTION:CM Seminar: Janez Bonca – University of Ljubljana\nTitle: Equilibrium and far-from-equilibrium properties of bipolaron coupled to  dispersive phonons \nAbstract: In the first part of my talk\, I will discuss  a Holstein-like model with two electrons nonlinearly coupled to quantum phonons. Using an efficient method based on full quantum approach [1-4] we  simulate the dynamical response of a system subject to a short spatially uniform optical pulse that couples to dipole-active vibrational modes. Nonlinear electron-phonon coupling can either soften or strengthen the phonon frequency in the presence of electron density [5]. When two electrons are free to propagate on a lattice subject to non-linear coupling to phonons that soften phonon frequency\, an external optical pulse with well tuned frequency can induce attraction between electrons. Electrons remain bound long after the optical pulse is switched off. Changing the frequency of the pulse the attractive electron–electron interaction can be switched to repulsive. Two sequential optical pulses with different frequencies can switch between attractive and repulsive interaction [6]. \nIn the second part\, I will discuss the phase diagram of the bipolaron in the Holstein – Hubbard model in the presence of dispersive phonons. We show that a finite dispersion can stabilize a bound bipolaron even at large Coulomb repulsion U [7]. The sign of the curvature of the optical phonon dispersion plays a decisive role on the bipolaron binding energy and the effective mass in the presence of  U. Finally\, I will discuss the influence of U on the ARPES spectral function of the bipolaron. \nSpeaker Bio: Janez Bonca is a Professor and Dean of the Faculty of Mathematics and Physics at the University of Ljubljana\, Slovenia.  His research interests include theory of incommensurate systems\, theory of strongly correlated systems and high temperature superconductors\, theory of heavy fermion systems\, theory of mesoscopic systems and quantum dots\, theory of frustrated spin systems\, physics of electron – phonon interaction and theory of polarons and bipolarons\, study of systems driven far from equilibrium\, thermalization in many-body systems\, theory of many-body localization. Prof. Bonca completed his PhD from the University of Ljubljana\, and worked as a Post-doctoral Associate at  Los Alamos National Laboratory from 1992-1995. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-janez-bonca-university-of-ljubljana-equilibrium-and-far-from-equilibrium-properties-of-bipolaron-coupled-to-dispersive-phonons/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240327T100000
DTEND;TZID=America/Vancouver:20240327T120000
DTSTAMP:20240311T155918Z
CREATED:20240311T155918Z
LAST-MODIFIED:20240311T155918Z
UID:7127-1711533600-1711540800@qmi.miffanytark.com
SUMMARY:Quantum Materials; Innovations and Commercialization Prospects
DESCRIPTION:As Canada embarks on a bold journey with its National Quantum Strategy\, backed by a $360 million investment in addition to other investments\, we stand at the forefront of quantum technology development. This strategic move underlines Canada’s commitment to leading in the global quantum revolution. \nOur upcoming webinar will shed light on the latest breakthroughs and commercialization opportunities within the quantum sector. Featuring experts from Canada’s leading quantum material research hubs\, this event promises a deep dive into the collaborative\, interdisciplinary efforts fueling the discovery of novel materials and the development of groundbreaking technologies. \nFeatured Speakers: \n\nDr. Louis Taillefer — Professor\, University of Sherbrooke; Co-Director\, CIFAR Quantum Materials Program\nDr. Adina Luican-Mayer (Professor\, Director) NSERC Training Program Materials for Quantum Technologies (MaQTech)\, University of Ottawa\nDr. Andrea Damascelli (Professor\, Scientific Director): Stewart Blusson Quantum Matter Institute (QMI)\, University of British Columbia\nDr. Nathan Nelson-Fitzpatrick (Director): Quantum-Nano Fabrication and Characterization Facility (QNFCF)\, University of Waterloo
URL:https://qmi.miffanytark.com/event/quantum-materials-innovations-and-commercialization-prospects/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240328T100000
DTEND;TZID=America/Vancouver:20240328T110000
DTSTAMP:20240325T203553Z
CREATED:20240325T203553Z
LAST-MODIFIED:20240325T203553Z
UID:7248-1711620000-1711623600@qmi.miffanytark.com
SUMMARY:CM Seminar: John Sous – University of California San Diego: Principles for phonon-driven energy solutions in functional electronic materials
DESCRIPTION:CM Seminar: John Sous – University of California San Diego\nTitle: Principles for phonon-driven energy solutions in functional electronic materials \nAbstract: Functional electronic materials are compounds in which correlations amongst electrons and between electrons and ionic vibrations (phonons) give rise to promising new functionalities poised to revolutionize energy conversion\, storage and sustainability. In this talk\, I will present principles – that extend the textbook understanding of electron-phonon coupling –  for the design of phonon-driven pathways to electronic materials with energy capabilities\, thereby opening a door to new advancements in the materials and energy sciences. I will discuss three examples: 1. Energy conversion in so-called polaronic crystals such as the organic oligo-acene molecules\, where I will show that the concept of a polaron becomes very quickly ill-defined as temperature increases from zero\, implying that energy absorption and conversion cannot be understood in terms of quasiparticle transport\, with ramifications to emerging solar cell technologies. 2. Energy storage in nanoscale materials whose phonons are initially excited by a light pulse\, where I will show that the excited phonons relax by releasing their excess energy into the electrons\, reshaping their correlations to form novel excited-state non-equilibrium phases such as the light-induced conversion of metals into disordered insulators and (near) superconductors which appear to be immune to thermalization on long timescales\, thus serving as new mediums for protected energy storage and utilization. 3. Energy sustainability from vibrationally coupled electrons in multiorbital electronic materials\, where I will show that phonons mediate superfluidity of light-mass\, small-size bipolarons with a critical transition temperature Tc whose value vastly surpasses widely assumed empirical upper bounds and which I am currently investigating in a number of emerging materials such as the newly synthesized organic terphenyl-based compounds\, SrTiO3\, LiTi2O4\, as well as twisted bilayer graphene moire heterostructures. I will conclude by providing an overview of my future plans. \nSpeaker Bio: John Sous is an Assistant Professor at the University of California\, San Diego (UCSD).  Prior to that he was a Gordon & Betty Moore Postdoctoral Fellow at Stanford University (2022 – 2023)\, before which he was a Materials Research Science and Engineering Center (MRSEC) Postdoctoral Fellow at Columbia University (2019 – 2022). He obtained a Ph.D. in Physics from the University of British Columbia (UBC) in 2019 and a M.Sc. in Chemical Physics from the University of Waterloo in 2013. His research focuses on the study of materials in which quantum correlations act to stabilize novel electronic states of matter with functionalities which can be useful in applied research\, such as energy applications. \n  \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-john-sous-university-of-california-san-diego-principles-for-phonon-driven-energy-solutions-in-functional-electronic-materials/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240404T100000
DTEND;TZID=America/Vancouver:20240404T110000
DTSTAMP:20240403T183148Z
CREATED:20240403T183148Z
LAST-MODIFIED:20240403T183148Z
UID:7269-1712224800-1712228400@qmi.miffanytark.com
SUMMARY:CM Seminar: Fiona Burnell – University of Minnesota: Stabilizing topologically non-trivial steady states with local dynamics in open quantum systems
DESCRIPTION:Fiona Burnell – University of Minnesota\nTitle: Electrons in twisted layers: design\, surprise\, and a new set of eyes \nAbstract: The goal of building a quantum computer has lead to rapid advances in experiments that allow for high-precision dynamical control of quantum systems at the single qubit level.  However\, a major challenge in harnessing the power of these devices is in understanding how best to control noise.  In particular\, many interesting phases of matter\, including topological phases\, that exist in closed quantum systems are not stable at finite temperature\, suggesting that they are particularly sensitive to the kinds of open-system noise present in such devices.  Quantum error correction protocols can be used to rectify this\, but these involve non-local processes.  In this talk\, I will explore approaches to stabilizing symmetry-protected topological order at arbitrarily long times in 1 dimension using local open-system dynamics.  I will show that this can be done when the noise is of a particular type relevant to Rydberg atom arrays\, known as biased erasure noise\, and comment on the implications of these results for possible steady-state phases of open quantum systems. \nSpeaker Bio: Fiona Burnell is a UBC alumnae and an associate professor at the University of Minnesota.  Her research interests include understanding how topology and symmetry dictate the possible phases of matter that can be found in nature\,  studying how and when quantum dynamics can result in systems evading their naive thermal equilibrium\, and contemplating experiments that can reveal patterns of quantum entanglement in many-body systems.
URL:https://qmi.miffanytark.com/event/cm-seminar-fiona-burnell-university-of-minnesota-stabilizing-topologically-non-trivial-steady-states-with-local-dynamics-in-open-quantum-systems/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240410T140000
DTEND;TZID=America/Vancouver:20240410T150000
DTSTAMP:20240405T180932Z
CREATED:20240405T180932Z
LAST-MODIFIED:20240405T180932Z
UID:7287-1712757600-1712761200@qmi.miffanytark.com
SUMMARY:CM Seminar: Domenico Giuliano – Department of Physics\, Università della Calabria\, Italy: Dissipation driven dynamical topological phase transitions in two-dimensional superconductors
DESCRIPTION:Domenico Giuliano – Department of Physics\, Università della Calabria\, Italy\nTitle: Dissipation driven dynamical topological phase transitions in two-dimensional superconductors \nAbstract: By quenching the interaction strength\, we induce and study a topological dynamical phase transition between superconducting phases of a planar fermionic model. Using the Lindblad Master Equation approach to account for the interactions of Bogoliubov quasiparticles among themselves and with the fluctuations of the superconducting order parameter\, we derive the corresponding relaxation dynamics of the order parameter. To fully characterize the phase transition\, we also compute the fidelity and the spin-Hall conductance of the system. Our approach provides us crucial informations for experimental implementations\, such as the dependence of the critical time on the system-bath coupling. \nSpeaker Bio: Domenico Giuliano has received his Ph. D. in 1998 from the Università di Napoli (Naples University) “Federico II” – Italy. During his Ph. D. he has spent six months at Stanford University\, under the supervision of Prof. Robert Laughlin. After graduating\, he moved back to Stanford\, on a two-year post-doc appointment\, supervised again by Prof. Laughlin. After that\, he has spent  two more years in Napoli as a post-doc research associate under the supervision of Prof. Arturo Tagliacozzo\, in 2003 he has become a university researcher at the University of Calabria\, in Soutern Italy. From year 2020 he is an associate professor of theorical physics at the same university. In the past\, he has been visiting several times the department of Physics at the University of British Coumbia\, on a long-lasting scientific collaboration with Prof. Ian Affleck and his group.  Domenico’s main research interest are in theoretical condensed matter. They include: Fractionalization of quantum number and fractional statistics; Low-dimensional correlated system\, including one-dimensional Luttinger liquids; Topological insulators and topological superconductors; Kondo effect and its applications; Quantum phase transitions.
URL:https://qmi.miffanytark.com/event/cm-seminar-domenico-giuliano-department-of-physics-universita-della-calabria-italy-dissipation-driven-dynamical-topological-phase-transitions-in-two-dimensional-superconductors/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240413T110000
DTEND;TZID=America/Vancouver:20240413T140000
DTSTAMP:20240328T204628Z
CREATED:20240328T204628Z
LAST-MODIFIED:20240328T204628Z
UID:7255-1713006000-1713016800@qmi.miffanytark.com
SUMMARY:World Quantum Family and Friends Day
DESCRIPTION:We are happy to organize Friends and Family Day at the Blusson Quantum Matter Institute. \nThis is a celebration of the QMI Community and World Quantum Day. \nPlease register here. \nLab Tours\nThe following labs will be open to the public. Volunteers will give brief explanations of each lab:\n• The Scanning Tunneling Microscopy Lab\n• The Ultrafast Spectroscopy Lab\n• The Quantum Materials Lab\n• The 2D Materials Lab\n• The Photonics & Nanostructures Lab\n• The Angle-Resolved Photoemission Spectroscopy Lab \nSuperconductor Track\nOur famous superconductor track will be on display throughout the event\, run by the one and\nonly James Day. \nAstronomy Station\nStop by a cosmic experience run by Jess McIver. \nRefreshments and Ice Cream\nCoffee will be available in the morning. Ice cream for the event will be hosted by Mona Berciu! \nMerch\nKids will receive QMI stickers and buttons. \nFun Passport\nKids (and adults?) will be provided with an event passport to explore the building and express their artistic skills. \nSocialize\nThe event is a great opportunity to socialize with the QMI community. Mingle with other QMI\nparents and friends in the lobby area\, while exploring the building\, or at the rest areas.
URL:https://qmi.miffanytark.com/event/world-quantum-family-and-friends-day/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240418T100000
DTEND;TZID=America/Vancouver:20240418T110000
DTSTAMP:20240404T042427Z
CREATED:20240404T042427Z
LAST-MODIFIED:20240404T042427Z
UID:7281-1713434400-1713438000@qmi.miffanytark.com
SUMMARY:CM Seminar: Michael Zaletel – University of California Berkley: Anomalous Hall Crystals in Graphene: interaction-driven Chern bands at zero magnetic field
DESCRIPTION:Michael Zaletel – University of California Berkley\nTitle: Anomalous Hall Crystals in Graphene: interaction-driven Chern bands at zero magnetic field \nAbstract: Recent experiments have discovered that pentalayer-graphene subject to a moire superlattice spontaneously breaks time-reversal\, resulting in a quantized anomalous Hall effect at zero magnetic field. At fractional filling\, the material exhibits a zero-field fractional quantum Hall effect. In contrast to other moire-materials\, the origin of Chern bands in this material is not so clear. I will present a theoretical picture in which Chern bands arise from an “anomalous Hall crystal” stabilized primarily by interactions.  So far this picture is supported mainly by mean-field calculations\, so I’ll conclude with some open questions about how the Hall crystal could be verified.   \nSpeaker Bio: Michael Zaletel is an Associate Professor of Physics and the\nAllison and Thomas Schneider Chair at UC Berkley.
URL:https://qmi.miffanytark.com/event/cm-seminar-michael-zaletel-university-of-california-berkley-anomalous-hall-crystals-in-graphene-interaction-driven-chern-bands-at-zero-magnetic-field/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240514T130000
DTEND;TZID=America/Vancouver:20240514T140000
DTSTAMP:20240430T172048Z
CREATED:20240430T172048Z
LAST-MODIFIED:20240430T172048Z
UID:7413-1715691600-1715695200@qmi.miffanytark.com
SUMMARY:Special CM Seminar: Étienne Lantagne-Hurtubise – Caltech: Graphene multilayers: from unconventional superconductors to quantum devices
DESCRIPTION:Étienne Lantagne-Hurtubise – Caltech\nTitle: Graphene multilayers: from unconventional superconductors to quantum devices \nAbstract: Crystalline graphene multilayers present a rich playground to explore correlated electronic phenomena in a tunable and ultra-clean setting. For instance\, Bernal bilayer graphene and rhombohedral trilayer graphene host multiple symmetry-broken metallic phases at low temperature\, as well as unconventional superconductors with different pairing symmetries. The rich phase diagram of these systems can further be tuned through proximity to WSe2\, which induces spin-orbit coupling in the graphene layers and leads to a dramatic enhancement of superconductivity that remains poorly understood. I will first discuss the lessons learned from our theoretical exploration of graphene multilayers with induced spin-orbit coupling\, focusing on various types of magnetic and inter-valley coherent ground states and their possible connections to superconductivity. I will then outline a recipe to engineer topological superconductivity in graphene multilayers using gate-defined Josephson junctions. Such a platform provides a promising alternative to traditional architectures for Majorana zero-modes due to its purity\, gate tunability and atomically thin nature.\nSpeaker Bio: Étienne Lantagne-Hurtubise completed his PhD at UBC\, and worked at QMI with Professor Marcel Franz. He is currently a postdoctoral fellow at Caltech.
URL:https://qmi.miffanytark.com/event/special-cm-seminar-etienne-lantagne-hurtubise-caltech-graphene-multilayers-from-unconventional-superconductors-to-quantum-devices/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240530T100000
DTEND;TZID=America/Vancouver:20240530T110000
DTSTAMP:20240514T160912Z
CREATED:20240514T160912Z
LAST-MODIFIED:20240514T160912Z
UID:7454-1717063200-1717066800@qmi.miffanytark.com
SUMMARY:Ultrafast quantum simulation and quantum computing with ultracold atom arrays at quantum speed limit
DESCRIPTION:Abstract: Many-body correlations drive a variety of important quantum phenomena and quantum machines including superconductivity and magnetism in condensed matter as well as quantum computers. Understanding and controlling quantum many-body correlations is thus one of the central goals of modern science and technology. My research group has recently pioneered a novel pathway towards this goal with nearby ultracold atoms excited with an ultrashort laser pulse to a Rydberg state far beyond the Rydberg blockade regime [1-7]. We first applied our  ultrafast coherent control with attosecond precision [2\,3] to a random ensemble of those Rydberg atoms in an optical dipole trap\, and successfully observed and controlled their strongly correlated electron dynamics on a sub-nanosecond timescale [1]. This new approach is now applied to arbitrary atom arrays assembled with optical lattices or optical tweezers that develop into a pathbreaking platform for quantum simulation and quantum computing on an ultrafast timescale [4-7]. \nIn this ultrafast quantum computing\, as schematically shown in Fig. 1\, we have recently succeeded in executing a controlled-Z gate\, a conditional two-qubit gate essential for quantum computing\, in only 6.5 nanoseconds at quantum speed limit\, where the gate speed is solely determined by the interaction strength between two qubits [5]. This is faster than any other two-qubit gates with cold-atom hardware by two orders of magnitude. It is also two orders of magnitude faster than the noise from the external environment and operating lasers\, whose timescale is in general 1 microsecond or slower\, and thus can be safely isolated from the noise. Moreover\, this two-qubit gate is faster than the fast two-qubit gate demonstrated recently by “Google AI Quantum” with superconducting qubits [8]. \nFigure 1. Conceptual diagram of the ultrafast twoqubit gate for quantum computing with cold atoms. Two single atoms captured in optical tweezers (red light) with a separation of a micrometer are entangled with an ultrafast laser pulse (blue light) shone for only 10 picoseconds [5]. Image source: Dr. Takafumi Tomita (IMS).\nReferences\n[1] N. Takei et al.\, Nature Commun. 7\, 13449 (2016).\nHighlighted by Science 354\, 1388 (2016); IOP PhyscisWorld.com (2016).\n[2] H. Katsuki et al.\, Acc. Chem. Res. 51\, 1174 (2018).\n[3] C. Liu et al.\, Phys. Rev. Lett. 121\, 173201 (2018).\n[4] M. Mizoguchi et al.\, Phys. Rev. Lett. 124\, 253201 (2020).\n[5] Y. Chew et al.\, Nature Photonics 16\, 724 (2022). (Front Cover Highlight)\n[6] V. Bharti et al.\, Phys. Rev. Lett. 131\, 123201 (2023).\n[7] V. Bharti et al.\, arXiv:2311.15575 (2023).\n[8] B. Foxen et al.\, Phys. Rev. Lett. 125\, 120504 (2020). \nSpeaker Bio: Kenji Ohmori is a Chair Professor at the Institute for Molecular Science (IMS)\, National Institutes of Natural Sciences\, Japan. After receiving his Ph.D. from The University of Tokyo in 1992\, he was a Research Associate and an Associate Professor at Tohoku University. In 2003 he was appointed a Full Professor at IMS. \nProfessor Ohmori is currently leading large-scale / long-term national projects on the development of ultrafast quantum simulators and quantum computers (2018-2030) generously supported with priority by the Ministry of Education\, Culture\, Sports\, Science and Technology (MEXT) and Cabinet Office of the government of Japan\, expected as one of the front runners in quantum technologies. \nHe has been celebrated with many honors. Highlights include the Japan Academy Medal (2007)\, Fellow of the American Physical Society (2009)\, Humboldt Research Award from the government of Germany (2012)\, Commendation for Science and Technology by the Minister of MEXT (2018)\, and the Medal with Purple Ribbon by His Majesty the Emperor of Japan for his achievements on quantum physics (2021). The Medal with Purple Ribbon is awarded for inventions and discoveries in science and technology\, and for outstanding achievements in the fields of science\, sports\, art and culture. \nProfessor Ohmori is currently serving as the Chair of the Committee for Quantum Science and Technology Policy\, MEXT\, Japan since 2023\, after serving as the Vice Chair of the same committee from 2015-2022. \nIt was officially announced in February 2024 that Professor Ohmori and his team established the “Commercialization Preparatory Platform” for their “cold (neutral) atom” quantum computer where 13 topnotch industries have joined\, including Development Bank of Japan Inc.\, Hitachi\, Ltd.\, Fujitsu Limited\, NEC Corporation\, and Hamamatsu Photonics K.K. The relevant start-up company will be launched within the Japanese Fiscal Year 2024.
URL:https://qmi.miffanytark.com/event/ultrafast-quantum-simulation-and-quantum-computing-with-ultracold-atom-arrays-at-quantum-speed-limit/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240531T100000
DTEND;TZID=America/Vancouver:20240531T110000
DTSTAMP:20240524T231634Z
CREATED:20240524T231634Z
LAST-MODIFIED:20240524T231634Z
UID:7544-1717149600-1717153200@qmi.miffanytark.com
SUMMARY:Special Seminar: Owen Sheekey - UCSB: Inter-valley coherence\, intrinsic and extrinsic spin-orbit coupling in rhombohedral graphene
DESCRIPTION:Abstract: Rhombohedral graphene multilayers provide a clean and highly reproducible platform to explore the emergence of superconductivity and magnetism in a strongly interacting electron system. The high density of states near the van Hove singularities lead to a variety of broken symmetry phases – including exotic forms of spin and valley ferromagnetism [2\, 3]. Because of their combined spin and valley ‘isospin’ degrees of freedom\, these Stoner magnets exhibit an approximate SU(4) symmetry with a near degeneracy in the many body phase diagram. In reality\, this SU(4) symmetry is only approximate\, weak symmetry breaking arises even at the single particle level – in the form of intrinsic spin-orbit coupling. Here\, we use high resolution thermodynamic compressibility measurements and nanoSQUID on tip (nSOT) magnetometry to study the effects that intrinsic spin-orbit coupling has on the magnetic phase diagram in rhombohedral graphene. By supporting rhombohedral graphene on a WSe2 substrate\, ‘extrinsic’ strong spin-orbit coupling can be proximitized\, significantly altering the magnetic phase diagram. We demonstrate the presence of an inter-valley coherent quarter metal which becomes strongly spin-valley locked when supported by WSe2. Our results shed light on the role proximity induced Ising spin-orbit coupling and intrinsic spin-orbit coupling plays in selecting the ground state in correlated graphene systems. \nReferences: \n[1] Zhou\, H.\, Xie\, T.\, Taniguchi\, T. et al. Nature 598\, 434–438 (2021). \n[2] Zhou\, H.\, Xie\, T.\, Ghazaryan\, A.\, et al. Nature 598\, 429–433 (2021). \n[3] Arp\, T.\, et. al. arXiv:2310.03781 (2023).
URL:https://qmi.miffanytark.com/event/special-seminar-owen-sheekey-ucsb-inter-valley-coherence-intrinsic-and-extrinsic-spin-orbit-coupling-in-rhombohedral-graphene/
LOCATION:McLeod 3038\, 2356 Main Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
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END:VCALENDAR