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X-WR-CALDESC:Events for Stewart Blusson Quantum Matter Institute
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220113T100000
DTEND;TZID=America/Vancouver:20220113T110000
DTSTAMP:20220105T235901Z
CREATED:20220105T235901Z
LAST-MODIFIED:20220105T235901Z
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SUMMARY:Claire Donnelly: Three-dimensional nanomagnetism: from textures in the bulk to 3D magnetic nanostructures
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker: \nClaire Donnelly\, Max Planck Institute for Chemical Physics of Solids \n  \nAbstract: \nThree dimensional magnetic systems promise significant opportunities for applications\, for example providing higher density devices [1] and new functionalities associated with complex topology and greater degrees of freedom [2\,3]. \n  \nWith the recent development of three-dimensional imaging techniques\, it is now possible to map internal three-dimensional magnetic structures\, and their response to external excitations. In this way we have observed three-dimensional vortex structures\, as well as Bloch point singularities [4\,5] and\, more recently\, nanoscale magnetic vortex rings [6\,7]. \n  \nIn addition to the static magnetic structure\, the dynamic response of the 3D magnetic configuration to excitations is key to our understanding of both fundamental physics\, and applications. With our recent development of X-ray magnetic laminography [5]\, it is now possible to determine the magnetisation dynamics of a three-dimensional magnetic system [5]. \n  \nAs well as observing magnetic textures within the “bulk”\, recent advances in nanofabrication make possible the fabrication of complex 3D magnetic nanostructures [8]. In this way we have realised magnetic double helices [9]\, which host highly coupled domain wall pairs that in turn lead to textures in the magnetic induction [9]. These offer not only a potential route to domain wall processing\, but also for the patterning of nanotextures in the magnetic field. \n  \nThese new experimental capabilities for 3D magnetic systems open the door to complex three-dimensional magnetic structures\, and their dynamic behaviour. \n  \nReferences: \n[1] Parkin et al.\, Science 320\, 190 (2008) \n[2] Fernández-Pacheco et al.\, Nat. Comm. 8\, 15756 (2017) \n[3] Donnelly and Scagnoli\, J. Phys. D: Cond. Matt. 32\, 213001 (2020). \n[4] Donnelly et al.\, Nature 547\, 328 (2017). \n[5] Donnelly et al.\, Nature Nanotechnology 15\, 356 (2020). \n[6] Cooper\, PRL. 82\, 1554 (1999). \n[7] Donnelly et al.\, Nat. Phys. 17\, 316 (2020) \n[8] Skoric et al.\, Nano Lett. 20\, 184 (2020). \n[9] Donnelly et al.\, Nature Nanotechnology (2021) https://doi.org/10.1038/s41565-021-01027-7 . \n  \nBiography: \nFollowing her MPhys at the University of Oxford\, Claire went to Switzerland to carry out her PhD studies at the Paul Scherrer Institute and ETH Zurich. She was awarded her PhD in 2017 for her work on 3D systems\, which was recognised by a number of prizes including the APS Richard Greene Dissertation Award\, the Werner Meyer-Ilse Memorial Award\, the ETH Medal\, and the SPS Award for Computational Physics. After a postdoc at the ETH Zurich\, she moved to the University of Cambridge and the Cavendish Laboratory as a Leverhulme Early Career Research Fellow\, where she was awarded the L’Oreal For Women In Science Fellowship\, and the European Magnetism Association Young Scientist Award. Since September 2021 she is a Lise Meitner Group Leader of Spin3D at the Max Planck Institute for Chemical Physics of Solids in Dresden\, Germany.
URL:https://qmi.miffanytark.com/event/claire-donnelly/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220120T100000
DTEND;TZID=America/Vancouver:20220120T110000
DTSTAMP:20220106T005046Z
CREATED:20220106T005046Z
LAST-MODIFIED:20220106T005046Z
UID:3950-1642672800-1642676400@qmi.miffanytark.com
SUMMARY:Christoph Renner: Electronic Vortex Core Structure of a d-Wave High Temperature Superconductor
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker \nChristoph Renner\, Vice-Dean\, Faculty of Science at University of Geneva \n  \nAbstract:\nHigh temperature superconductivity (HTS) in copper oxides keeps challenging our understanding. Among the outstanding puzzles is the electronic structure of the Abrikosov vortex cores. The fundamental excitations bound to magnetic vortices in type-II superconductors carry information about essential properties of the superconducting state. Their proper identification is therefore of prime interest to elucidate the mechanism driving HTS. We will review recent vortex core studies and present new scanning tunneling microscopy data [1] at low magnetic field\, which unveil the d wave electronic structure of the vortex core predicted by Wang and MacDonald in 1995 [2]. We show that previously reported unconventional electronic structures\, including the checkerboard charge order in the vortex halo and the absence of a zero-bias conductance peak at the vortex center\, are direct consequences of short inter-vortex distance and consequent vortex-vortex interactions prevailing in earlier experiments done at significantly higher field. The remarkable change of the spectroscopic footprint of the vortex cores we find between 0.16 Tesla and 3 Tesla is surprising for such a low energy scale and calls for further investigations. \n  \n[1] Gazdic\, T.\, et al.\, arXiv:2103.05994\, 2021. \n[2] Y. Wang and A. H. MacDonald\, Physical Review B 52\, R3876 (1995). \n  \nBiography: \nChristoph Renner is professor of physics at the department of quantum matter physics at the University of Geneva\, Switzerland. He is leading a research group investigating electronic ground states and their interplay in low dimensional correlated electron systems using scanning probe microscopy and spectroscopy. Prior to joining Geneva in 2006\, he was appointed senior and then principal research fellow at University College London (UCL)\, with affiliations in the London Centre for Nanotechnology (LCN)\, the Department of Physics & Astronomy\, and the Department of Medicine. During his time in London\, he was also a business fellow of the London Technology Network. Before moving to UCL\, he held a visiting scientist position at the NEC Research Institute in Princeton. \n  \nWith over 30 years of experience\, Prof. Renner is an expert in developing and applying variable temperature scanning tunnelling microscopy to study correlated electron materials\, in particular superconducting\, charge ordered and low dimensional systems. His research is published in leading academic journals and has been selected as a physics highlight of 2017 by the editors of Physics. Currently\, his team is focusing on high temperature superconductors and spectroscopy of tuneable electronic properties in transition metal dichalcogenides and devices by means of strain\, space charge doping and thickness. Among recent scientific successes are the observation of the intrinsic vortex core signature expected for a superconductor whose gap has d-wave symmetry\, the link between CDW contrast inversion in STM images and the CDW gap well below the Fermi level\, and the exposure of a multiband CDW in a transition metal dichalcogenide. \n  \nInterested in public outreach\, Prof. Renner was founding director of the Physiscope of the University of Geneva between 2007 and 2017. Since 2014\, he is a founding member and president of the Scienscope\, an initiative introducing junior and high school children as well as the public to science in a hands-on and entertaining manner. Prof. Renner is also actively promoting collaborations with industry\, founding member and president of the Laboratory for Advanced Technology\, a gateway supporting innovation by facilitating industry access to the competences and equipment at the University of Geneva. He was vice president of the physics section (2011-2014) and\, since 2014\, he is vice dean for innovation and infrastructures of the Faculty of Science of the University of Geneva. \n  \nProf. Renner holds a PhD degree from the University of Geneva. He received the Jean Würth award for best PhD Thesis and the IBM award of the Swiss Physical Society. As hobbies\, he enjoys piloting\, travelling and cooking.
URL:https://qmi.miffanytark.com/event/christoph-renner/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220127T100000
DTEND;TZID=America/Vancouver:20220127T110000
DTSTAMP:20220120T194754Z
CREATED:20220120T194754Z
LAST-MODIFIED:20220120T194754Z
UID:4020-1643277600-1643281200@qmi.miffanytark.com
SUMMARY:Jennifer Cano: Higher magic angles in twisted bilayer graphene and topological twistronics 
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker: Jennifer Cano\, Assistant Professor at Stony Brook University \nTitle: Higher magic angles in twisted bilayer graphene and topological twistronics \n  \nBio: Jennifer Cano is an Assistant Professor at Stony Brook University and an Affiliate Associate Research Scientist at the Flatiron Institute. She earned a PhD in physics from the University of California\, Santa Barbara\, in 2015\, and was subsequently a postdoctoral fellow at the Princeton Center for Theoretical Science. Her research is focused on the classification and realization of topological phases of matter\, ranging from strongly correlated phases with fractionalized excitations to non-interacting topological band structures. \n  \nAbstract: We present recent analytical and numerical results on the chiral model of twisted bilayer graphene and introduce a new platform for twistronic devices on the surface of a topological insulator. In the first part of the talk\, we study the flat band wavefunctions of chiral twisted bilayer graphene at higher magic angles. We show that at higher magic angles\, the wavefunctions exhibit an increasing number of zeros\, resembling quantum Hall wavefunctions at higher Landau levels. Zeros of the same chirality cluster near the center of the moire unit cell\, causing an enhanced phase winding and circulating current. The wavefunctions at higher magic angles have signatures in scanning tunneling microscopy and orbital magnetization experiments. In the second half of the talk\, we investigate the fate of the surface Dirac cone of a three-dimensional topological insulator subject to a superlattice potential. Using a combination of diagrammatic perturbation theory\, lattice model simulations\, and ab initio calculations\, we report a dramatic renormalization of the surface Dirac cone velocity and the formation of gapless satellite Dirac cones. The latter can produce very flat bands that may be a fruitful place to searching for interaction-driven physics.
URL:https://qmi.miffanytark.com/event/jennifer-cano/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220203T100000
DTEND;TZID=America/Vancouver:20220203T110000
DTSTAMP:20220127T224446Z
CREATED:20220127T224446Z
LAST-MODIFIED:20220127T224446Z
UID:4048-1643882400-1643886000@qmi.miffanytark.com
SUMMARY:Eliška Greplová: Quantum Matter Meets Artificial Intelligence
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09 \nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker: Eliska Greplova\, Assistant professor at the Department of Quantum Nanoscience at Delft University of Technology \n  \nAbstract: The fields of condensed matter\, artificial intelligence and quantum computing have independently experienced a number of breakthroughs in the last decade. In this talk\, I am going provide an illustration of their mutually beneficial overlaps and emerging interdisciplinary applications. Specifically\, I am going to show how AI-motivated ansätze for quantum wave functions can help us solve complex problems in topological condensed matter physics. The emergent topological modes can in turn redefine a figure of merit for design of quantum devices – that\, to close the circle – give rise to challenging control problems that can be efficiently solved with the help of machine learning algorithms. \n  \nBio: Eliska is an assistant professor at Kavli Institute of Nanoscience\, Delft University of Technology\, Netherlands. She is leading Quantum Matter and AI group\, where she works at the boundary of quantum computing\, artificial intelligence and condensed matter physics. Prior to joining TU Delft\, Eliska completed her PhD at Aarhus University in Denmark and postdoctoral fellowship at ETH Zürich in Switzerland. Eliska is a member of World Economic Forum Global Future Council on Quantum Computing and co-founder of an open science platform Virtual Science Forum.
URL:https://qmi.miffanytark.com/event/eliska-greplova/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220210T100000
DTEND;TZID=America/Vancouver:20220210T110000
DTSTAMP:20220131T181905Z
CREATED:20220131T181905Z
LAST-MODIFIED:20220131T181905Z
UID:4052-1644487200-1644490800@qmi.miffanytark.com
SUMMARY:Christian Schneider: Exciton-Polaritons and their condensates in microcavities loaded with atomically thin crystals
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n\nSpeaker: Christian Schneider\, Institute of Physics\, University of Oldenburg \nMonolayer transition metal dichalcogenides (TMDC) have emerged as a new platform for studies of tightly bound excitons and many-body excitations in ultimately thin materials. Their giant dipole coupling to optical fields makes them very appealing for implementing novel photonic devices\, and for fundamental investigations in the framework of cavity quantum electrodynamics [1]. \nIn the regime of strong light-matter coupling between TMDC excitons and microcavity photons \,  the effect of bosonic condensation of becomes evident in the high-density regime [2]. I will  address the question on the emergence of long-range first-order spatial coherence\, via interferometric g(1)(t) measurements (Fig. 1c). I will finally discuss the emergence of coherence of exciton-polaritons in a trap at room temperature [3]. \n \nPolariton dispersion relation below (0.1 Pth\, panel a\, excitation laser at 1.671 eV) and above threshold (2Pth\, panel b). (c) Real space interference pattern produced in a Michelson interferometer\, with a zero delay between the two interfering paths\, and one retro-reflected image. \n[1] C. Schneider et al. Nature Commun. 9\, 2695 (2018). \n[2] C. Anton-Solanas\, et al. Nature Materials 1-7 (2021).
URL:https://qmi.miffanytark.com/event/christian-schneider-exciton-polaritons-and-their-condensates-in-microcavities-loaded-with-atomically-thin-crystals/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220215T150000
DTEND;TZID=America/Vancouver:20220215T160000
DTSTAMP:20211101T205857Z
CREATED:20211101T205857Z
LAST-MODIFIED:20211101T205857Z
UID:3542-1644937200-1644940800@qmi.miffanytark.com
SUMMARY:Careers in Research
DESCRIPTION:Speakers:\nKateryna Foyevtsova \n\nResearch Associate\, Density Functional Theory\n\nSilvia Lueschner-Folk \n\nResearch Associate\, Topological Devices\n\nFengmiao Li \n\nResearch Associate\, Molecular Beam Epitaxy
URL:https://qmi.miffanytark.com/event/careers-in-research/
CATEGORIES:Student event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220217T100000
DTEND;TZID=America/Vancouver:20220217T110000
DTSTAMP:20220209T183956Z
CREATED:20220209T183956Z
LAST-MODIFIED:20220209T183956Z
UID:4065-1645092000-1645095600@qmi.miffanytark.com
SUMMARY:Fazel Tafti: A New Paradigm for Colossal Magnetoresistance and Nonlinear Hall Effect
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09 \nMeeting ID: 684 7017 3961\nPasscode: 113399 \n\nSpeaker: Fazel Tafti\, Boston College \nAbstract \nMaterials with strong magneto resistive responses are the backbone of spintronic technology\, magnetic sensors\, and hard drives. Among them\, manganese oxides with a mixed valence and a cubic perovskite structure stand out due to their colossal magnetoresistance (CMR). A double exchange interaction underlies the CMR in manganates\, whereby charge transport is enhanced when the spins on neighboring Mn3+ and Mn4+ ions are parallel. Prior efforts to find different materials or mechanisms for CMR resulted in a much smaller effect. In this talk\, I present the observation of an enormous CMR at low temperatures in EuCd2P2 without manganese\, oxygen\, mixed valence\, or cubic perovskite structure. EuCd2P2 has a layered trigonal lattice and exhibits antiferromagnetic ordering at 11 K. The magnitude of CMR (104%) in as-grown crystals of EuCd2P2 rivals the magnitude in optimized thin films of manganates. The magnetization\, transport\, and synchrotron X-ray data suggest that strong magnetic fluctuations are responsible for this phenomenon. The realization of CMR at low temperatures without heterovalency leads to a new regime for materials and technologies related to antiferromagnetic spintronics. \nBiography: \nFazel Tafti completed his PhD at the University of Toronto with Prof. Steven Julian. His thesis was focused on developing transport experiments under ultrahigh pressures in diamond anvil cells. His first postdoc position at the University of Sherbrook with Prof. Louis Taillefer was focused on the thermal conductivity and thermoelectric measurements in iron-based superconductors under intense magnetic fields. He then changed fields from physics to chemistry and completed a second postdoc at Princeton University with Prof. Bob Cava. His research was focused on the chemical synthesis of topological and magnetic materials.  He has been an assistant professor at Boston College (physics department) since 2016. His lab is interdisciplinary between physics\, chemistry\, and materials science. \n  \n 
URL:https://qmi.miffanytark.com/event/fazel-tafti-a-new-paradigm-for-colossal-magnetoresistance-and-nonlinear-hall-effect/
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220303T100000
DTEND;TZID=America/Vancouver:20220303T230000
DTSTAMP:20220228T230022Z
CREATED:20220228T230022Z
LAST-MODIFIED:20220228T230022Z
UID:4148-1646301600-1646348400@qmi.miffanytark.com
SUMMARY:Ke Zou: Recent progress on understanding the superconductivity of bulk and monolayer FeSe
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n\nSpeaker: Ke Zou\, Stewart Blusson Quantum Matter Institute \nAbstract: \nThe physics of high-temperature superconductors is usually governed by the interplay of the spin and charge degrees of freedom. FeSe has the simplest chemical composition among Fe-based superconductors\, yet monolayer FeSe on SrTiO3 substrate reports one of the highest superconducting transition temperatures. I will summarize the progress on understanding its superconductivity from my group and other groups in the recent couple of years. We will discuss the specific roles of charge transfer\, spin magnetic moment\, and phonon coupling in this system. \n\nF. Li\, I. Elfimov\, and G.A. Sawatzky\, “Modulation doping of the FeSe monolayer on SrTiO3”\, submitted (2022).\nC. Liu\, H. Shin\, A. Doll\, H.H. Kung\, R.P. Day\, B.A. Davidson\, J. Dreser\, G. Levy\, A. Damascelli\, C. Piamonteze\, and K. Zou\, “High-temperature superconductivity and robustness against magnetic polarization in monolayer FeSe on EuTiO3”\, npj Quantum Materials 6\, 85 (2021).\nC. Liu\, R.P. Day\, F. Li\, R.L. Roemer\, S. Zhdanovich\, S. Gorovikov\, T. Pedersen\, J. Jiang\, S. Lee\, M. Schneider\, D. Wong\, P. Dosanjh\, F.J. Walker\, C.H. Ahn\, G. Levy\, A. Damascelli\, G.A. Sawatzky\, and K. Zou\, “High-order replica bands in monolayer FeSe/SrTiO3 revealed by polarization-dependent photoemission spectroscopy”\, Nature Communications 12\, 4573 (2021).\n\nBio: Assistant Professor\, Department of Physics and Astronomy – SBQMI \n\n\n\n\n\n\nResearch Focus\nOur research interests are in the growth of complex oxide and chalcogenide films by molecular beam epitaxy and the studies of their properties and functions. We aim to achieve scientific and technological breakthroughs in new materials and new functional devices. We integrate molecular beam epitaxy synthesis with nanostructure fabrication and characterization techniques for physical and electronic structures\, to explore and control the generated properties in new materials and in new forms of materials\, such as in heterostructures and gated field-effect transistors.
URL:https://qmi.miffanytark.com/event/ke-zou-recent-progress-on-understanding-the-superconductivity-of-bulk-and-monolayer-fese/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220308T140000
DTEND;TZID=America/Vancouver:20220308T150000
DTSTAMP:20211101T210215Z
CREATED:20211101T210215Z
LAST-MODIFIED:20211101T210215Z
UID:3545-1646748000-1646751600@qmi.miffanytark.com
SUMMARY:Careers in Outreach
DESCRIPTION:Speakers: \n\nTheresa Liao\, Communications Coordinator\, Storyteller\, Department of Physics and Astronomy\, UBC\nAndrew Jamison\, Senior Manager\, Geering Up and Outreach\, UBC\nElla Meyer\, Quantum Computing Outreach Coordinator\, Geering Up\, UBC
URL:https://qmi.miffanytark.com/event/careers-in-outreach/
CATEGORIES:Student event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220310T100000
DTEND;TZID=America/Vancouver:20220310T110000
DTSTAMP:20220302T215953Z
CREATED:20220302T215953Z
LAST-MODIFIED:20220302T215953Z
UID:4155-1646906400-1646910000@qmi.miffanytark.com
SUMMARY:Inna Vishik: Electronic Correlations and Topology across Tc in a Magnetic Weyl Semimetal
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Inna Vishik\, Associate Professor in Physics and Astronomy at UC Davis \nAbstract: Co3Sn2S2 is a magnetic Weyl semimetal below its Curie temperature (Tc) of 177K. I will discuss our recent spatial and temperature-dependent angle-resolved photoemission spectroscopy (ARPES) studies in this system.  Across Tc\, we observe signatures of a topological phase transition\, but also observe changes in bulk bands which are inconsistent with a simple lifting of exchange interactions\, suggesting enhanced electronic correlations in the regime without long-range magnetic order.  I will also discuss spatial-dependent microARPES data which quantify the characteristic differences between Sn- and S- terminated surfaces. \nRef: Rossi\, Ivanov\, et al\, PRB 104\, 155115 (2021) \nBio:  Inna Vishik is an Associate Professor in Physics and Astronomy at UC Davis.  Since 2016\, her lab has been performing ARPES and ultrafast optics experiments to elucidate emergent phenomena in superconducting\, correlated\, and topological quantum materials.  Prior to this\, she received her PhD at Stanford and was subsequently a Pappalardo Postdoctoral fellow at MIT.
URL:https://qmi.miffanytark.com/event/inna-vishik-electronic-correlations-and-topology-across-tc-in-a-magnetic-weyl-semimetal/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220317T100000
DTEND;TZID=America/Vancouver:20220317T110000
DTSTAMP:20220309T185436Z
CREATED:20220309T185436Z
LAST-MODIFIED:20220309T185436Z
UID:4165-1647511200-1647514800@qmi.miffanytark.com
SUMMARY:Alexandra Navrotsky: Recent Developments in High Temperature Calorimetry
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Alexandra Navrotsky – Center for Materials of the Universe (MotU) \, Arizona State University \nTitle: Recent developments in high temperature calorimetry \nAbstract: A variety of high temperature calorimetric techniques have recently advanced for application to refractory oxides and related materials. These include improvements in oxide melt solution calorimetry at temperatures up to 1500 ⁰C\, differential thermal analysis to 2500 ⁰C\, and “drop-n-catch” calorimetry to 3000 ⁰C. Used together\, these methods enable one to draw a more complete picture of phase stability\, order-disorder\, melting and crystallization\, and dissolution of solids in silicate melts. These methods will be illustrated using examples from rare earth materials chemistry. New developments in the calorimetry of chalcogenides and mixed anion materials will also be presented. The synergy among calorimetry\, first principles calculations and computations of phase diagrams will be emphasized. \nBio: Alexandra Navrotsky – Professor\, School of Molecular Sciences and School for Engineering of Matter\, Transport and Energy \nAffiliated Faculty Member\, School of Earth and Space Exploration \nDirector\, Center for Materials of the Universe
URL:https://qmi.miffanytark.com/event/alexandra-navrotsky-recent-developments-in-high-temperature-calorimetry/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220324T100000
DTEND;TZID=America/Vancouver:20220324T110000
DTSTAMP:20220316T183214Z
CREATED:20220316T183214Z
LAST-MODIFIED:20220316T183214Z
UID:4171-1648116000-1648119600@qmi.miffanytark.com
SUMMARY:Marlou Slot: Atom by Atom and Layer by Layer: Designing and Realizing Electronic Quantum Matter
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\n \nSpeaker: Marlou Slot; National Institute of Standards and Technology (NIST) – Gaithersburg\, Maryland\, United States \nTitle: Atom by Atom and Layer by Layer: Designing and Realizing Electronic Quantum Matter \nAbstract: Quantum simulators are a versatile tool to study the behavior of quantum matter in a controlled way. Elusive or complex quantum systems are simulated using accessible quantum systems that can be manipulated at will. While platforms based on\, among others\, ultracold atoms and photons are well-established\, electronic platforms are currently being developed.\nThe scanning tunneling microscope (STM) is uniquely suited to create and manipulate electronic 2D potential landscapes at will in-situ. By atomic-scale patterning of the 2D electron gas at specific metal surfaces\, the electrons can be molded into electronic lattices with nearly any geometry. In this talk\, I will present CO molecules adsorbed on a Cu(111) surface as a highly-tunable electronic quantum simulator\, in which the lattice geometry\, the orbital degree of freedom\, the dimension and the topology can be tailored [1-4]. Moving beyond the in-situ approach\, ex-situ nanofabricated twisted van der Waals devices pave the way to study electron-electron interactions in tailor-made 2D potential landscapes [5]. I will demonstrate high-resolution gate-tunable Landau level spectroscopy and signatures of correlated states in twisted double bilayer graphene\, expanding the quantum simulation toolkit from atom by atom to layer by layer. \n[1] M. R. Slot et al.\, Nat. Phys. 13\, 672 (2017)\n[2] S. N. Kempkes and M. R. Slot et al.\, Design and characterization of electrons in a fractal geometry\, Nat. Phys. 15\, 127 (2019)\n[3] M. R. Slot and S. N. Kempkes et al.\, p-Band Engineering in Artificial Electronic Lattices\, PRX 9\, 011009 (2019)\n[4] S. N. Kempkes and M. R. Slot et al.\, Robust zero-energy modes in an electronic higher-order topological insulator\, Nat. Mater. 18\, 1292 (2019)\n[5] D.M. Kennes et al.\, Moiré heterostructures as a condensed-matter quantum simulator\, Nat. Phys. 17\, 155 (2021) \nBio: Marlou Slot is a Rubicon Postdoctoral Fellow and NIST-Georgetown PREP Fellow working with Dr. Joseph Stroscio at the National Institute of Standards and Technology. She obtained her PhD from Utrecht University working with Prof. Daniel Vanmaekelbergh and Prof. Ingmar Swart. Prior to that\, she obtained her undergraduate degree from RWTH Aachen University and EPFL Lausanne and she was a research assistant at Forschungszentrum Jülich. Her research interests focus on designer quantum matter realized and/or measured using scanning probe microscopy\, including van der Waals heterostructures and in-situ patterned surfaces.
URL:https://qmi.miffanytark.com/event/marlou-slot-atom-by-atom-and-layer-by-layer-designing-and-realizing-electronic-quantum-matter/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220331T100000
DTEND;TZID=America/Vancouver:20220331T110000
DTSTAMP:20220323T181708Z
CREATED:20220323T181708Z
LAST-MODIFIED:20220323T181708Z
UID:4194-1648720800-1648724400@qmi.miffanytark.com
SUMMARY:Kwabena Bediako: New Twists on Chemistry and Physics in Moiré Superlattices
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Kwabena Bediako\, Assistant Professor at UC Berkeley\, Dept. of Chemistry \nTitle: New twists on chemistry and physics in moiré superlattices     \nAbstract: Atomically thin or two-dimensional (2D) materials can be assembled into bespoke heterostructures to produce some extraordinary physical phenomena. Likewise\, these highly tunable materials are useful platforms for exploring fundamental questions of interfacial chemical/electrochemical reactivity. One exciting and relatively recent example is the formation of moiré superlattices from azimuthally misoriented (twisted) layers. These moiré superlattices result in flat bands that lead to an array of correlated electronic phases. However\, in these systems\, complex strain relaxation can also strongly influence the fragile electronic states of the material. Precise characterization of these materials and their properties is therefore critical to the understanding of the behavior of these novel moiré materials (and 2D heterostructures in general). In this talk\, I will discuss how spontaneous mechanical deformations (atomic reconstruction) and resultant intralayer strain fields at moiré superlattices of twisted bilayer graphene have been quantitatively imaged using 4D-STEM Bragg interferometry. I will also discuss the impact of these mechanical deformations to the electronic band structure of these moiré superlattices and the correlated electronic phases they host. The talk will then explore how various degrees of freedom that are unique to 2D materials may be used to tailor interfacial chemistry at well-defined mesoscopic electrodes and the outlook for new paradigms of functional materials for energy conversion and low-power electronic devices. \nBio: Kwabena was born in Ghana\, West Africa. He moved to the US in 2004 for his undergraduate studies in Chemistry at Calvin College\, MI\, graduating with honors in 2008. After a year working at UOP Honeywell in IL where he researched new catalysts for the petrochemical and gas processing industries\, he traveled from the Midwest to the East Coast to begin his graduate studies in Inorganic Chemistry with Prof. Daniel Nocera at MIT (and later Harvard University). His graduate research focused on structural and mechanistic studies of water splitting electrocatalysis at cobalt and nickel compounds. After receiving his Ph.D. in 2015 from Harvard University\, Kwabena began postdoctoral work in Prof. Philip Kim’s group in the Department of Physics at Harvard\, where he studied ion intercalation and quantum transport in 2D van der Waals heterostructures. In July 2018\, Kwabena joined the faculty of the UC Berkeley Department of Chemistry. Awards received include: AFOSR Young Investigator award\, ONR Young investigator award\, DOE Early Career Award\, Gordon and Betty Moore Materials Synthesis Fellow\, and CIFAR–Azrieli Global Scholar.
URL:https://qmi.miffanytark.com/event/kwabena-bediako-new-twists-on-chemistry-and-physics-in-moire-superlattices/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220407T100000
DTEND;TZID=America/Vancouver:20220407T110000
DTSTAMP:20220330T201042Z
CREATED:20220330T201042Z
LAST-MODIFIED:20220330T201042Z
UID:4248-1649325600-1649329200@qmi.miffanytark.com
SUMMARY:Dr. Valentino R. Cooper: Exploring the Chemical Landscape of High Entropy Oxides
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Dr. Valentino R. Cooper \nTitle: Exploring the Chemical Landscape of High Entropy Oxides \nAbstract: High entropy\, multi-component metal alloys (HEA)\, have superior mechanical properties and high radiation tolerances; which are\, in part\, driven by configurational entropy. Recently\, an oxide analogue comprised of MgO\, CoO\, NiO\, CuO and ZnO was synthesized; exhibiting a truly entropy-stabilized\, reversible phase transition from a multiphase material to a single rock salt-ordered phase above 850-900°C. This entropy-driven stabilization may engender many unique properties\, such as high melting temperatures\, radiation resistance and other anomalous responses. Here\, we discuss a design strategy for the prediction of synthesizable disordered oxides. Our effort employs first principles studies of 2-component oxides to develop design rules based on the relationship between pairwise enthalpies of formation\, DH\, and configurational entropy of the disordered material. A similar chemical identity-to-DH map was previously explored using the class of high entropy alloys\, where the stability of multicomponent metal alloys was correlated to the enthalpy of mixing of binary and ternary compounds. \nIn this presentation\, I will focus on our recent efforts to employ this local enthalpy map as an effective strategy for the discovery of new classes of entropy stabilized oxides. In particular\, we are able to use our first principles calculations with Monte Carlo simulations in order to build chemical bonding maps to study the local environment preferences that determine whether a material will phase segregate\, to form a single phase with clustered regions\, or form a disordered solid solution. This enables us to identify compounds that may be synthesizable or could be stabilized by entropy – thus allowing for more reliable materials discovery and design. \nThis work was supported by the U.S. D.O.E.\, Office of Science\, BES\, MSED (first principles calculations) and the LDRD Program of ORNL (simulations)\, managed by UT-Battelle\, LLC\, for the U. S. DOE using resources at NERSC and OLCF. \nBio: \n \nDr. Valentino R. Cooper is the Section Head for the Materials Theory Modeling and Simulations section in the Materials Sciences and Technology Division at Oak Ridge National Laboratory. He received his Ph. D from the Chemistry Department at the University of Pennsylvania in 2005. Prior to joining ORNL in 2008\, he was a post-doctoral associate in the Physics Department of Rutgers University. His research focuses on electronic structure methods for understanding dispersion interactions and in the prediction of functional materials including piezoelectrics and ferroelectrics. Dr. Cooper is a 2013 recipient of the Department of Energy Early Career award.
URL:https://qmi.miffanytark.com/event/dr-valentino-r-cooper-exploring-the-chemical-landscape-of-high-entropy-oxides/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220419T140000
DTEND;TZID=America/Vancouver:20220419T170000
DTSTAMP:20211101T210823Z
CREATED:20211101T210823Z
LAST-MODIFIED:20211101T210823Z
UID:3547-1650376800-1650387600@qmi.miffanytark.com
SUMMARY:Careers in Industry
DESCRIPTION:Hamed Taheri\, \n\nRobust Choice Cloud Solutions Inc.\n\n  \nSarah D’Ettorre \n\nMicrosoft\n\nYony Bresler
URL:https://qmi.miffanytark.com/event/careers-in-industry-2/
CATEGORIES:Student event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220517T100000
DTEND;TZID=America/Vancouver:20220517T110000
DTSTAMP:20211102T210308Z
CREATED:20211102T210308Z
LAST-MODIFIED:20211102T210308Z
UID:3552-1652781600-1652785200@qmi.miffanytark.com
SUMMARY:Careers in Academia
DESCRIPTION:Speakers:\n  \nJorge Quintanilla \n\nUniversity of Kent\n\nFazel Tafti \n\nBoston College\n\nMaxime Dion \n\nQC Developer\,  Université de Sherbrooke
URL:https://qmi.miffanytark.com/event/careers-in-academia-2/
CATEGORIES:Student event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220915T100000
DTEND;TZID=America/Vancouver:20220915T110000
DTSTAMP:20220907T210229Z
CREATED:20220907T210229Z
LAST-MODIFIED:20220907T210229Z
UID:4860-1663236000-1663239600@qmi.miffanytark.com
SUMMARY:Sabrina Leslie: Single-molecule microscopy of RNA-lipid-nanoparticles: Bringing the nanoscale physics to help advance nanomedicines
DESCRIPTION:Sabrina Leslie: Associate Professor\, UBC Department of Physics and Astronomy and Michael Smith Labs \nAffiliate Faculty member\, SBME\, GSAT\, BIONF \nAbstract: I will present a unique quantitative single-particle imaging platform called CLiC (Convex Lens-induced Confinement) which enables simultaneous measurements of the size\, mRNA-payload\, and dynamic properties of vaccine and other nanoparticles in controlled\, cell-like conditions (Kamanzi et al\, ACS Nano 2021). Recently relocated to UBC PHAS and MSL from McGill in 2021\, our nanoparticle imaging team innovates nanoscale devices and approaches to investigate the structure-activity relationships which can help characterize and understand emerging classes of mRNA-lipid-nanoparticles such as COVID19 vaccines. We image individual confined\, freely diffusing particles in solution as well as during reagent-exchange\, such as in response to a change in solution pH\, in order to emulate/explore intracellular dynamics in a controlled setting. Over the long term and in collaboration with health/therapeutic scientists\, we are working towards correlating detailed multi-scale data sets\, including single-particle measurements made in vitro as well as in cells and tissues\, with clinical results\, to create a through-line of understanding of vaccine/drug effectiveness from the microscopic to clinical scale. Our inspiration is to innovate and use nanoscale tools to obtain new biophysical insights into how and why medicines work to enable and optimize their rational design and engineering. This talk builds off our recent publication in ACS Nano (Kamanzi et al\, 2021)\, describes our ongoing collaboration with the Cullis laboratory and others (UBC Health Sciences)\, and shares an outlook including opportunities for new PHAS and interdisciplinary graduate students at UBC looking to join an exciting interdisciplinary team of biophysicists. The Leslie Lab has recently set up its new laboratory at MSL/NCE with several state-of-the-art microscopes and we are excited to share our work with QMI and get to know our new community through and after this seminar. \n \nCaption: CLiC single-particle imaging and analysis of Lipid Nanoparticles (LNPs) enables characterization of detailed size and loading distributions of RNA–LNP complexes. A) Compressing the flow-cell confines LNPs for extended study. B) Trapped LNPs are shown in microwells. 100s – 1000s of isolated LNPs are imaged in parallel\, a process which can be repeated thousands of times. C) Single-particle tracking is used to obtain LNP trajectories\, which are then used to obtain particle diffusivity/ size (D) as well as intensity/RNA payload (E). This information is then used to define LNP size and RNA payload distributions and inform structure-activity relationships of the nanoparticles in conjunction with other dynamic\, multi-scale and biological data.
URL:https://qmi.miffanytark.com/event/sabrina-leslie-single-molecule-microscopy-of-rna-lipid-nanoparticles-bringing-the-nanoscale-physics-to-help-advance-nanomedicines/
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220922T100000
DTEND;TZID=America/Vancouver:20220922T110000
DTSTAMP:20220907T224728Z
CREATED:20220907T224728Z
LAST-MODIFIED:20220907T224728Z
UID:4864-1663840800-1663844400@qmi.miffanytark.com
SUMMARY:Dr. Guosong Hong: Seeing the Sound: Optical and Ultrasonic Brain Interfaces Based on Materials Advances
DESCRIPTION:Dr. Guosong Hong – Stanford University  \nTitle: Seeing the Sound: Optical and Ultrasonic Brain Interfaces Based on Materials Advances \nAbstract: Today’s optical neuromodulation and imaging methods enable causal manipulation of neural activity to dissect complex circuit connections underlying certain behaviors and facilitate brain-computer interfaces. In these approaches\, visible light is commonly used\, thus limiting penetration depth in vivo and necessitating an invasive procedure that damages the endogenous brain tissue and constrains the subject’s free behavior. In this talk\, I will present three recently developed methods to address these challenges based on novel material advances: sono-optogenetics\, infrared optogenetics\, and an intravascular light source. In sono-optogenetics\, we demonstrate that mechanoluminescent materials can convert focused ultrasound into localized light emission for noninvasive optogenetic neuromodulation in live mice. In addition\, inspired by the infrared sensitivity of rattlesnakes\, we developed an approach to use brain-penetrant infrared light for tether-free and implant-free neuromodulation throughout the entire brain in freely behaving mice. Lastly\, we leveraged a biomineral-inspired approach to synthesize nanoscopic phosphors as an intravascular light source. In contrast to conventional external light sources\, this intravascular light source offers deeper tissue penetration for imaging the mouse brain through the uncleared skull. I will conclude my talk by presenting an outlook on how advances in condensed matter may facilitate our understanding of the mind. \nBiography: Dr. Guosong Hong received his Ph.D. in chemistry from Stanford University in 2014 and then carried out postdoctoral studies with at Harvard University. Dr. Hong joined Stanford Materials Science and Engineering and Neurosciences Institute as an assistant professor in September 2018. His research at Stanford aims to develop and apply novel optical and electronic materials for minimally invasive brain interfacing. He is a recipient of the NIH Pathway to Independence (K99/R00) Award\, the MIT Technology Review ‘35 Innovators Under 35’ Award\, the Science PINS Prize for Neuromodulation\, the NSF CAREER Award\, the Walter J. Gores Award for Excellence in Teaching\, and the Rita Allen Foundation Scholars Award.
URL:https://qmi.miffanytark.com/event/dr-guosong-hong-seeing-the-sound-optical-and-ultrasonic-brain-interfaces-based-on-materials-advances/
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220929T090000
DTEND;TZID=America/Vancouver:20220929T133000
DTSTAMP:20220920T234912Z
CREATED:20220920T234912Z
LAST-MODIFIED:20220920T234912Z
UID:4919-1664442000-1664458200@qmi.miffanytark.com
SUMMARY:Synergy Day 2022
DESCRIPTION:AMPEL Synergy Day 2022\nDate: Thursday\, September 29th \nTime: 9:00 am – 2:00 pm. \nLocation: Room 2020 Kaiser Building\, 2332 Main Mall \nRegistration is open to AMPEL and SBQMI members. \nFood will be provided by the Burgurholic food truck (https://burgerholic.ca/food-truck-menu) serving a variety of meat and vegetarian burgers. \nProgram\nOpening \n8:50 – 9:00: Coffee \n9:00 – 9:10: John’s Welcome \nNew Faculty Research Presentations and Synergy Lectures \n9:10 – 9:30: Drew Potter \n9:30 – 10:00: Synergy Lecture\, Lukas Chrostowski \n10:00 – 10:15: Break \n10:15 – 10:35: Ben Britton \n10:35 – 10:45: Safety First \n10:45 – 11:00: Shared Facilities: Nanofab and CFET \n11:00 – 11:20: Sergey Kravchenko \n11:20 – 11:45: Dan Bizzotto  Synergy 2 \n11:45 – 12:05: Joe Salfi Group \n12:10 – 1:30: Lunch (provided) \n1:20 – 2:00: Closing
URL:https://qmi.miffanytark.com/event/synergy-day/
CATEGORIES:UBC event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220929T100000
DTEND;TZID=America/Vancouver:20220929T110000
DTSTAMP:20220921T164849Z
CREATED:20220921T164849Z
LAST-MODIFIED:20220921T164849Z
UID:4927-1664445600-1664449200@qmi.miffanytark.com
SUMMARY:CM Seminar: Dr. Tina Rost\, High Entropy Ceramics: Investigating localized structural effects on emerging properties
DESCRIPTION:Speaker: Dr. Tina Rost \nDate: Thursday September 29 2022 \nTime: 10:00 am – 11:00 AM PST \nLocation: Zoom \nZoom Link: https://ubc.zoom.us/j/64243489212?pwd=YkFSMDdxN3Nhbm15aExBdTF6MnBvQT09 \nMeeting ID: 642 4348 9212 \nPasscode: 742838 \n  \nAbstract\nMany properties we observe in materials are a direct consequence of their composition and local structure. High entropy materials are a unique class of systems that do not have a primary composition; rather they contain a near-equimolar distribution of several elements— where no single element serves as host. Such compositional disorder is accompanied by a unique distribution of localized structural distortions that can have a profound effect on properties such as thermal conductivity\, magnetic interaction\, diffusion\, and more. To date\, high entropy metals and ceramics are gaining significant traction in the materials community as unique and interesting properties continue to emerge\, from amorphous-like thermal conductivities to exotic magnetic states. In this talk\, we present and discuss ongoing work on the local characterization of several high entropy compositions exhibiting crystal structures from rocksalts to Kagome lattices. In particular\, the use of X-ray absorption fine structure (XAFS) is demonstrated to aid in understanding such disorder on the local level and how it may influence functional properties \n  \nSpeaker Bio\nDr. Christina Rost is currently an Assistant Professor of Physics at James Madison University in Harrisonburg\, VA. She graduated with a Ph.D. in Materials Science and Engineering from North Carolina State University in 2016\, following both a B.S. and an M.S. in Physics from Indiana University of Pennsylvania. Her Ph.D. focused on the development and phase-characterization of a novel class of oxide systems stabilized through configurational disorder\, named “Entropy Stabilized Oxides”.   After graduation\, Tina was Postdoctoral Research Associate in the Experiments and Simulations in Thermal Engineering (ExSITE) group\, within the Department of Mechanical and Aerospace Engineering at the University of Virginia. There\, her work focused on experimental methods to test thermal properties at extremely high temperatures and thermal transport in complex and high-entropy oxides and carbides. Currently\, her all-undergraduate research group at JMU focuses efforts on complex oxide synthesis and characterization. She is an active member of the American Ceramics Society and the American Physical Society.
URL:https://qmi.miffanytark.com/event/cm-seminar-high-entropy-ceramics-investigating-localized-structural-effects-on-emerging-properties/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221004T120000
DTEND;TZID=America/Vancouver:20221004T130000
DTSTAMP:20221003T182524Z
CREATED:20221003T182524Z
LAST-MODIFIED:20221003T182524Z
UID:4947-1664884800-1664888400@qmi.miffanytark.com
SUMMARY:Dr. Sebastian Paeckel: Tensor network methods for open electron-phonon systems: Bipolarons in the presence of dissipation
DESCRIPTION:Dr. Sebastian Paeckel: Dr. Sebastian Paeckel is from LMU Germany and is one of the world leading experts in Tensor Network methods. \nTitle: Tensor network methods for open electron-phonon systems: Bipolarons in the presence of dissipation \nAbstract: Studying the interplay between electrons and phonons recently has seen a remarkable revival\, driven by both methodical progress\, as well as fascinating new physical insights\, such as the possibility of light-bipolaron induced superconductivity [1\,2] or the enhancement of transport properties [3]. Here\, investigating the effects of environments (dissipative\, thermal\, driven) coupled to the phonon system is a crucial but enormously challenging problem\, which on the one hand is important to understand the validity of effective\, isolated models\, while on the other hand allows for tailored manipulations of the phononic state. Recently\, we developed a new toolbox of tensor network methods which are designed to allow an efficient treatment of electron-phonon systems in- and out-of equilibrium as well as coupled to an environment. Exhibiting a speed-up of significantly more than an order of magnitude\, we are able to implement open quantum system techniques\, which previously had been way too expensive to be of proper use for studying large system sizes by means of tensor network methods.\nIn this talk I introduce the developed tools and give a brief overview of the current state\, their potential and limitations. Furthermore\, I discuss a first application\, namely the effect of a dissipative environment\, coupled to the Hubbard-Holstein model\, putting the emphasis on a previously reported enhancement of the metallic phase.\n[1]  Phys. Rev. Lett. 121\, 247001 (2021)\n[2]  https://doi.org/10.48550/arXiv.2203.07380\n[3] Scientific Reports volume 7\, 3774 (2017) \nShort Bio: Sebastian did his PhD in Göttingen from 2015-2019 focussing on the development Matrix Product States (MPS) methods\, in particular time evolution methods. In 2019 he had an internship at Microsoft Station Q iand studied transport through Majorana Islands. In 2020\, he became a Junior Researcher Leader in LMU in Munich and started studying electron phonon systems (method development and application\, also to quantum chemistry problems).
URL:https://qmi.miffanytark.com/event/dr-sebastian-paeckel-tensor-network-methods-for-open-electron-phonon-systems-bipolarons-in-the-presence-of-dissipation/
CATEGORIES:Other seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221012T110000
DTEND;TZID=America/Vancouver:20221012T120000
DTSTAMP:20221011T171818Z
CREATED:20221011T171818Z
LAST-MODIFIED:20221011T171818Z
UID:4961-1665572400-1665576000@qmi.miffanytark.com
SUMMARY:R. Jason Jones: Frequency Comb Spectroscopy of Laser Produced Plasmas
DESCRIPTION:Professor R. Jason Jones – University of Arizona \nTitle: Frequency Comb Spectroscopy of Laser Produced Plasmas \nWhen: Wednesday\, October 12\, 2022 at 11am \nWhere: QMI 488 \nAbstract: In this talk I’ll give an overview of our work developing spectroscopic techniques with frequency comb sources from the XUV to the MIR. In particular\, I’ll focus on our work studying basic aspects of atomic\, ionic\, and molecular formation in laser-produced plasmas (LPP’s) using dual-comb spectroscopy. Our interest in such LPP’s includes their use in sample preparation for precision atomic/molecular spectroscopy and material analysis as well as surrogates for studying chemical/nuclear explosions and formation of heavy elements within kilonova. \nBio: Professor R. Jason Jones holds the John Paul Schaefer Endowed Chair in Optical Sciences at the University of Arizona. He leads a research group in experimental optical physics at the Wyant College of Optical Sciences. His research interests include ultrafast optics\, nonlinear light-matter interactions\, high-precision optical spectroscopy\, and the development and application of femtosecond frequency combs. Recent work focuses on novel architectures for optical atomic clocks and time-resolved dual-comb spectroscopy from the XUV to the MIR\, including the first demonstration of its use in studying atomic\, ionic\, and molecular formation inside laser-produced plasmas. Dr. Jones has also been instrumental in the establishment of the annual Winter School and Workshop at the Wyant College of Optical Sciences as a nation-wide event to introduce undergraduates to research and career opportunities in the field of Optics and Photonics. Dr. Jones received his PhD from the University of New Mexico in 2001. He continued his work as a research associate at JILA (a joint institute of the University of Colorado and the National Institute of Standards and Technology)\, where he was supported by a fellowship from the National Research Council\, working on the continued development and applications of fs frequency combs. In 2005 he demonstrated the up-conversion of frequency combs into the vacuum-ultraviolet for the first time. He continued to work as a Senior Research Associate of JILA until July 2006 when he left to join the College of Optical Sciences at the University of Arizona. He is a recipient of the NSF CAREER award and DARPA’s Young Investigator awards and is a member of the American Physical Society and the Optical Society of America. He holds two US patents and has published over 50 peer-reviewed articles.
URL:https://qmi.miffanytark.com/event/r-jason-jones-frequency-comb-spectroscopy-of-laser-produced-plasmas/
CATEGORIES:Other seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221013T100000
DTEND;TZID=America/Vancouver:20221013T110000
DTSTAMP:20221004T221006Z
CREATED:20221004T221006Z
LAST-MODIFIED:20221004T221006Z
UID:4950-1665655200-1665658800@qmi.miffanytark.com
SUMMARY:CM Seminar: Dr. Anushya Chandran - Quantization of Dynamics in Quasi-periodically Driven Systems
DESCRIPTION:Dr. Anushya Chandran: Boston University \nTitle: Quantization of dynamics in quasi-periodically driven systems \nAbstract: In the past decade\, quantum simulators have increased in their power and scope\, offering exquisite dynamical control of tens or even hundreds of individual atoms/ions. \nConcurrently\, a topological revolution in our understanding of electronic band structures has taken place\, driven by the discovery of topological insulators\, graphene and other topological materials. Remarkably\, these advances can be connected — the dynamics of driven few level systems can be described using band structures in “synthetic dimensions\,” one per driving tone. Topological order in the synthetic band structure then leads to quantized dynamical responses in the quantum simulator. \nIn this talk\, I will use a unifying frequency lattice construction to reveal non-adiabatic topological responses in quasi-periodically driven systems. We will find that quasi-periodically driven qubits already exhibit topologically distinct dynamical phases\, and that a 2-tone driven wire can function as a quantized energy pump at any temperature. The latter system provides one of the few examples of many-body localization protected order that is absolutely stable. I will argue that the quantized energy pumping regime is accessible in near-term optical and microwave cavity-QED experiments\, and that furthermore\, it is useful to prepare highly excited non-classical cavity states and entangled cavity-qubit states. \nBio: Anushya Chandran studies the organizing principles of quantum systems far from equilibrium. Her research sheds light on the process of thermalization\, designs protocols to achieve non-trivial quantum dynamics\, and informs near-term quantum device design. Anushya hails from India\, where she studied at the Indian Institute of Technology in Madras. She received her PhD from Princeton University and performed post-doctoral research at Perimeter Institute before joining Boston University. She is the recipient of the Sloan fellowship and the NSF young investigator career award. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-dr-anushya-chandran-quantization-of-dynamics-in-quasi-periodically-driven-systems/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221019T183000
DTEND;TZID=America/Vancouver:20221019T193000
DTSTAMP:20221012T174104Z
CREATED:20221012T174104Z
LAST-MODIFIED:20221012T174104Z
UID:4978-1666204200-1666207800@qmi.miffanytark.com
SUMMARY:Unboxing Quantum: Spooky Action
DESCRIPTION:Spooky Action at a Distance\nQuantum Entanglement and Spooky Action won the Nobel Prize in physics this year. Once considered a boogieman in physicists’ closets\, quantum entanglement is one of the weirdest\, most unintuitive phenomena in the natural world. Dubbed “spooky action at a distance” by Einstein himself\, this quantum behavior puzzled scientists for years before we could demonstrate it experimentally. In this talk\, you will hear about the fascinating science behind entanglement in a fun\, interactive\, and accessible way! \n  \n\n\nSpeaker Bio\nElla is the Quantum Computing Outreach Coordinator at UBC Geering Up Engineering Outreach\, where she focuses on lowering barriers for youth to engage with STEM. Her program involves making quantum computing a more accessible topic for learners of all ages through summer camps\, workshops\, local events and more. Ella has a Bachelor’s Degree in Astronomy from UBC’s Physics and Astronomy Department. She is a big fan of all things Halloween\, particularly when there is a way to make it overlap with science. \n\n\nRSVP Here: https://www.eventbrite.ca/e/unboxing-quantum-spooky-action-tickets-416733841137 \nUnboxing Quantum page: https://qmi.miffanytark.com/programs/unboxing-quantum/
URL:https://qmi.miffanytark.com/event/unboxing-quantum-spooky-action/
CATEGORIES:Public,Unboxing Quantum
ATTACH;FMTTYPE=image/jpeg:https://qmi.miffanytark.com/wp-content/uploads/2022/10/Unboxing-Quantum-Halloween.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221026T120000
DTEND;TZID=America/Vancouver:20221026T150000
DTSTAMP:20221013T230427Z
CREATED:20221013T230427Z
LAST-MODIFIED:20221013T230427Z
UID:4985-1666785600-1666796400@qmi.miffanytark.com
SUMMARY:Experience the World’s Fastest Visible and Thermal Cameras
DESCRIPTION:Program\n12:00 PM: Seminar \n1:00 – 3:00 PM: Live Demos & Pizza \nLocation: Brimacombe 311 \nOverview\nThis showcase will provide an overview of High Speed & Thermal Imaging\, with an introduction to the factors that need to be considered for a successful set up and highlight latest advances. The presentation will discuss the different sensor architectures and how those impact the results. It will cover everything from 65.4 MP at 70 fps to 1 billion fps at 1MP visible cameras and thermal/infrared sensors. This will include the differences between CCD vs. CMOS vs. Thermal ROIC sensors and how these architectures affect the maximum frame rates and record times. New developments such as Correlated Double Sampling\, binning and Back Side Illuminated sensors for CMOS will be explained. RAM vs Solid State vs “On Sensor” high speed memory pros and cons will be described. Cutting edge cameras will be on hand\, so you can experience what is possible with the most recent technology. The presentation will be followed by a Q&A and live demos. \nSpeaker Bio\nNathaniel Kajumba has an MSci in Physics and a Ph.D. (2003-2007) in laser physics from Imperial College London and over 19 years of experience with lasers\, optics and research grade scientific instrumentation. He was a Research Associate at the National Research Council of Canada (NRC) from 2007-2010 in the Attosecond group of Paul Corkum\, and the Deputy Head of the Free Electron Laser Research Group at the Ludwig Maximilian University & Max-Plank Institute for Quantum Optics in Munich\, Germany (2010-2014). During this time he operated the ATLAS laser system in Munich\, Germany and the Gemini Laser Facility\, Rutherford Appleton Laboratory\, UK\, two of the worlds most powerful ultra fast lasers. On returning to Canada in 2014 he joined the team at Delta Photonics to leverage his experience to serve the Canadian Photonics community. Over the past eight years he has specialized in high-speed cameras and related technology. Nathaniel is located in the Vancouver sales office and covers western Canada.
URL:https://qmi.miffanytark.com/event/experience-the-worlds-fastest-visible-and-thermal-cameras/
CATEGORIES:Other seminars
ORGANIZER;CN="AMPEL":MAILTO:ampel-sec@apsc.ubc.ca
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221027T100000
DTEND;TZID=America/Vancouver:20221027T110000
DTSTAMP:20221011T184651Z
CREATED:20221011T184651Z
LAST-MODIFIED:20221011T184651Z
UID:4968-1666864800-1666868400@qmi.miffanytark.com
SUMMARY:CM Seminar: Zac Ward - Disorder as an Order Parameter
DESCRIPTION:Zac Ward – Oak Ridge National Laboratory \nTitel: Disorder as an Order Parameter \nAbstract: The way that materials behave can simply be thought of as a response to what the electrons in the material are doing. Controlling the atoms’ arrangement to one another in a crystal lattice changes where the electrons reside and how they interact with one another. If we can continuously control atomic compositions and structural relationships between the constituent elements\, we can then manipulate functionality with unprecedented precision. In this presentation\, I will describe our efforts to open previously inaccessible lattice symmetries and compositional phase spaces in strongly correlated quantum materials by means of light ion implantation and entropy-assisted synthesis. I will provide examples from our recent works that demonstrates how continuous control of symmetry opens new avenues to manipulate magnetic anisotropy and how compositional complexity can be used to design dynamic spin frustration by tailoring local degeneracies. We will close with a discussion of how shifting local variances in spin and exchange coupling types while maintaining position symmetries provides exciting opportunities for designing novel Griffiths phases or quantum many-body systems with tunable critical behaviors. \nBio: Zac Ward is a Senior Scientist in the Quantum Heterostructures Group at Oak Ridge National Laboratory. His research is directed at understanding and controlling electronic interactions in novel materials aimed at identifying transformative information and energy technologies of pressing economic and environmental need. Underpinning this effort is expertise in 1) single crystal film synthesis using pulsed laser deposition and light element ion implantation to tailor spin\, charge\, and orbital degrees of freedom; and 2) structural and functional characterization using labscale x-ray diffraction\, magnetometry\, transport characterization\, and beamline-based x-ray spectroscopy and neutron reflectometry. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-zac-ward-disorder-as-an-order-parameter/
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221103T100000
DTEND;TZID=America/Vancouver:20221103T110000
DTSTAMP:20221011T201725Z
CREATED:20221011T201725Z
LAST-MODIFIED:20221011T201725Z
UID:4970-1667469600-1667473200@qmi.miffanytark.com
SUMMARY:CM Seminar: Professor Romain Vasseur - Anomalous Diffusion in Quantum Spin Chains
DESCRIPTION:Professor Romain Vasseur – University of Massachusetts\, Amherst \nTitle: Anomalous diffusion in quantum spin chains  \nAbstract: High-temperature quantum transport is usually assumed to be incoherent and diffusive.  In this talk\, I will explain how anomalous transport in quantum spin chains can emerge from proximity to special integrable limits\, due to a hierarchy of long-lived quasiparticle excitations. I will summarize our understanding of finite-temperature transport in integrable spin chains\, and argue that integrability-breaking perturbations can generically lead to either super- or subdiffusion up to very long-time scales. \nBio: Romain Vasseur is an Associate Professor in the Physics Department of the University of Massachusetts\, Amherst.  He is a condensed matter theorist working on strongly correlated quantum systems and quantum information\, with a focus on the interplay of strong interactions and quantum entanglement\, leading to new emergent phenomena both in thermal equilibrium and in non-equilibrium quantum systems. Before moving to Amherst\, Dr. Vasseur was a Postdoctoral Fellow at Lawrence Berkeley National laboratory (2013-2017)\, working in the Condensed Matter Theory Center at the University of California\, Berkeley. He obtained his PhD at IPhT (CEA\, Saclay) and LPTENS (ENS\, Paris) in 2013. Prof. Vasseur has been recognized as a fellow of the Alfred P. Sloan Foundation (2019) and an Early Career Award of the US Department of Energy (2018). He is also the recipient of a Young Investigator Award of the US Air Force Office of Scientific Research (2020). \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-professor-romain-vasseur-anomalous-diffusion-in-quantum-spin-chains/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221110T100000
DTEND;TZID=America/Vancouver:20221110T110000
DTSTAMP:20221026T201345Z
CREATED:20221026T201345Z
LAST-MODIFIED:20221026T201345Z
UID:5020-1668074400-1668078000@qmi.miffanytark.com
SUMMARY:CM Seminar: Joyce Poon: Visible-light Silicon Integrated Photonics for Future Computing
DESCRIPTION:Joyce Poon – University of Toronto \nTitle: Visible-light Silicon Integrated Photonics for Future Computing \nAbstract: The emerging demands of computing require hardware advances to realize new types of computing architectures and interfaces. Foundry silicon photonics leverages the maturity of microelectronics manufacturing to fabricate photonic integrated circuits. Today\, silicon photonics is mostly used in the short-wave infrared spectrum for optical communications. I will discuss how foundry silicon photonics in the visible spectrum is an enabling technology for future computing\, addressing applications such as displays\, neural implants\, and quantum computing. \nBiography: Joyce Poon is the Managing Director at the Max Planck Institute of Microstructure Physics\, a Professor of Electrical and Computer Engineering at the University of Toronto\, and an Honorary Professor in the Faculty of Electrical Engineering and Computer Science at the Technical University of Berlin.  She currently serves as a Director-at-Large for Optica (formerly the Optical Society\, OSA). She and her team specialize in integrated photonics on silicon.  Prof. Poon obtained the Ph.D. in Electrical Engineering from Caltech in 2007. She is a Optica Fellow and a Fellow of the IEEE.
URL:https://qmi.miffanytark.com/event/cm-seminar-joyce-poon-visible-light-silicon-integrated-photonics-for-future-computing/
CATEGORIES:CM Seminar,Student event
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221117T100000
DTEND;TZID=America/Vancouver:20221117T110000
DTSTAMP:20221110T004813Z
CREATED:20221110T004813Z
LAST-MODIFIED:20221110T004813Z
UID:5058-1668679200-1668682800@qmi.miffanytark.com
SUMMARY:CM Seminar: Professor Kai-Mei C Fu - Quantum Point Defects: Can These Defects Be Less Defective?
DESCRIPTION:Professor Kai-Mei C Fu –  University of Washington  \nTitle: Quantum point defects: Can these defects be less defective? \nAbstract: Point defects in crystals are the solid state analog to trapped ions. Thus these “quantum defects”\, which can be integrated into solid-state devices\, have gained popularity as qubit candidates for scalable quantum networks. In this talk\, I will introduce some of the basic quantum defect properties desirable for quantum network applications. I will highlight my own group’s efforts at understanding and controlling the properties of defects in diamond including (1) synthesis\, frequency and emission control of deep-level vacancy complexes in diamond and (2) properties of shallow-level donors in ZnO\, including single donors and intentionally synthesized donors in ZnO. \nBio: Kai-Mei Fu is the Virginia and Prentice Bloedel Professor of Physics and Electrical and Computer Engineering at the University of Washington and holds a dual appointment with the Pacific Northwest National Laboratory. Kai-Mei received their PhD in Applied Physics \nin 2007 from Stanford University. Their research focuses on the synthesis\, characterization and control of optically active quantum defects in crystals\, with applications in quantum networks and sensing. At UW\, Kai-Mei is the Director of UW’s NSF National Research Training Program: Accelerating Quantum-Enabled Technologies and the co-chair of UW’s interdisciplinary QuantumX Steering Committee.  They are also the Deputy Director of the Department of Energy National Quantum Initiative (NQI) Co-design Center for Quantum Advantage. In their free time\, Kai-Mei enjoys spending time with their family outdoors in the beautiful Pacific Northwest. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-professor-kai-mei-c-fu-quantum-point-defects-can-these-defects-be-less-defective/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20221117T140000
DTEND;TZID=America/Vancouver:20221117T150000
DTSTAMP:20221116T191757Z
CREATED:20221116T191757Z
LAST-MODIFIED:20221116T191757Z
UID:5118-1668693600-1668697200@qmi.miffanytark.com
SUMMARY:Special Seminar: Thin film lithium niobate photonic platform
DESCRIPTION:Speaker: Marko Loncar\, Harvard University \nAbstract: I will present thin film lithium niobate photonic platform\, featuring strong light confinement and dense integration\, that has the potential to revolutionize optical communications\, microwave and quantum photonics. Electro-optic modulators\, frequency combs\, photon pair sources\, and their integration with lasers and detectors\, will be discussed.
URL:https://qmi.miffanytark.com/event/special-seminar-thin-film-lithium-niobate-photonic-platform/
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END:VCALENDAR