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X-WR-CALNAME:Stewart Blusson Quantum Matter Institute
X-ORIGINAL-URL:https://qmi.miffanytark.com
X-WR-CALDESC:Events for Stewart Blusson Quantum Matter Institute
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DTSTART;TZID=America/Vancouver:20240607T110000
DTEND;TZID=America/Vancouver:20240607T120000
DTSTAMP:20240524T192104Z
CREATED:20240524T192104Z
LAST-MODIFIED:20240524T192104Z
UID:7527-1717758000-1717761600@qmi.miffanytark.com
SUMMARY:Special Seminar: Rachel Wortis - Trent University: Many-body localization in the disordered Fermi-Hubbard model
DESCRIPTION:Title:  Many-body localization in the disordered Fermi-Hubbard model \nAbstract: How isolated quantum systems reach thermal equilibrium is a long-standing question of continuing interest. The absence of equilibration in some systems is also well known\, notably Anderson localization in noninteracting systems with quenched disorder.  However\, it has only relatively recently been understood that the absence of equilibration can persist in the presence of interactions\, dubbed many-body localization.  While most of the theoretical work in this area has focused on spin systems\, in which there is just one local degree of freedom\, systems with multiple coupled degrees of freedom are of interest\, not least because most experimental studies of many-body localization use cold atoms described by the Hubbard model.  This talk will review this context and explore the specific case of the disordered Fermi-Hubbard model.  With two coupled local degrees of freedom\, charge and spin\, how does disorder in one of these influence localization in the other?  Writing the Hamiltonian in terms of charge- and spin-specific integrals of motion\, we extract time scales associated with charge-charge\, spin-spin\, and charge-spin coupling and connect these with the growth of entanglement.
URL:https://qmi.miffanytark.com/event/special-seminar-rachel-wortis-trent-university-many-body-localization-in-the-disordered-fermi-hubbard-model/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240612T080000
DTEND;TZID=America/Vancouver:20240613T170000
DTSTAMP:20240501T230655Z
CREATED:20240501T230655Z
LAST-MODIFIED:20240501T230655Z
UID:7418-1718179200-1718298000@qmi.miffanytark.com
SUMMARY:Dawn VII
DESCRIPTION:Every 2-3 years\, the community of physicists working with ground-based gravitational wave (GW) detectors holds a discussion-based “Dawn” meeting to plan for the future of the field.  \nThis year the global ground-based GW community (LIGO\, Virgo\, KAGRA\, Cosmic Explorer\, and Einstein Telescope) is coming to us: Blusson QMI is hosting the Dawn VII meeting June 12-13 in the Scarfe building. \nYou can find a program outline here: https://dawn7.phas.ubc.ca/program/ \nDawn VII will be a great introduction to challenges\, opportunities\, and relevant timescales for development of enabling technologies for ground-based GW detectors\, including thin-film mirror coatings (a critical need with a lot of overlapping expertise in QMI)\, large-scale substrates\, thermal effects\, sensor development\, and quantum squeezing.  \nThere will also be satellite workshops devoted to pursuing a needed breakthrough in thin-film coatings and GW detector technology on Friday June 14.  \nPlease register here!
URL:https://qmi.miffanytark.com/event/dawn-vii/
LOCATION:Neville Scarf\, 2125 Main Mall\, Vancouver\, British Columbia\, V6T 1Z4\, Canada
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240619T100000
DTEND;TZID=America/Vancouver:20240619T110000
DTSTAMP:20240604T013837Z
CREATED:20240604T013837Z
LAST-MODIFIED:20240604T013837Z
UID:7591-1718791200-1718794800@qmi.miffanytark.com
SUMMARY:Quantum Computing: Building Bridges Between Academia\, Industry\, and Government
DESCRIPTION:In recent years\, quantum computing has made continuous progress from improvements in scalability to advancements in error correction codes. This has motivated an increasing focus on exploring use cases and applications. \nJoin us for this year’s second Unboxing Quantum panel\, where quantum industry experts and thought leaders will come together to discuss Canada’s rapidly evolving quantum computing landscape. Hosted by UBC’s Blusson Quantum Matter Institute (Blusson QMI)\, the online event will take place from 10:00 to 11:00 am (PT) on June 19\, 2024. \n \nWith a special focus on pathways to fostering collaboration between academia\, industry\, and government\, this panel aims to explore the critical role that universities and research institutes play in fostering adoption\, ushering in new technology\, and training the quantum workforce as we emerge from the noisy intermediate-scale quantum (NISQ) era and into the early stages of fault tolerance. \nSpeakers: \n\nLukas Chrostowski\, Investigator\, Blusson QMI\nLisa Lambert\, CEO\, Quantum Industry Canada\nAlex Challans\, CEO\, Resonance\nChristopher Coleman\, Postdoctoral Fellow\, Blusson QMI (Moderator)\n\nTo register for the event\, please click here.
URL:https://qmi.miffanytark.com/event/quantum-computing-building-bridges-between-academia-industry-and-government/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240703T100000
DTEND;TZID=America/Vancouver:20240703T110000
DTSTAMP:20240625T155827Z
CREATED:20240625T155827Z
LAST-MODIFIED:20240625T155827Z
UID:7660-1720000800-1720004400@qmi.miffanytark.com
SUMMARY:Special Seminar: Solids with random stacking: the curious case of lithium
DESCRIPTION:Abstract: Close-packing of spheres is a problem with a long\, beautiful history that spans centuries. To achieve maximal density\, we must first arrange spheres into triangular layers and stack them. Each layer can sit in two possible positions. I will describe the solid that arises from random stacking\, i.e.\, when each twofold choice is made at random. I will introduce a related problem — that of stacking spheres with the least possible density\, while retaining stability. The conjectured solution involves stacking honeycomb layers\, with a six-fold choice at each layer.  I will describe random stacking in this case as well. \nI will then present a decades-long puzzle: the low-temperature structure of lithium and sodium. Both have irregular structures with many conflicting claims. We propose an explanation that borrows ideas from the field of frustrated magnetism. Lithium and sodium form close-packed structures\, with stacked triangular layers. Due to a hidden gauge symmetry\, all stacking configurations have the same electronic energy. We have a ‘frustrated’ solid where an infinite family of crystal structures compete. \nReferences: Phys. Rev. E 108\, 035003 (2023)\,arXiv:2405.15865 \nSpeaker Bio: Ganesh Ramachandran obtained his PhD from the University of Toronto in 2011. He then completed a postdoctoral stint at IFW\, Dresden. Subsequently\, he was a faculty member at the Institute of Mathematical Sciences in Chennai\, India. Since 2021\, he has been an Assistant Professor at Brock University. \nProf. Ramachandran has worked on frustrated magnetism\, topological phases\, quantum state preparation and statistical physics. His recent work touches upon pump-induced correlations\, altermagnetism\, spin ice and quantum dimer models.
URL:https://qmi.miffanytark.com/event/special-seminar-solids-with-random-stacking-the-curious-case-of-lithium/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240717T090000
DTEND;TZID=America/Vancouver:20240717T100000
DTSTAMP:20240716T230944Z
CREATED:20240716T230944Z
LAST-MODIFIED:20240716T230944Z
UID:7693-1721206800-1721210400@qmi.miffanytark.com
SUMMARY:Special Seminar: Wolf Widdra - Institute of Physics\, Martin-Luther-Universität Halle-Wittenberg: Laser-based double photoemission spectroscopy at surfaces
DESCRIPTION:Abstract: \nWith the recent progress in high-order harmonic generation (HHG) using femtosecond lasers\, laboratory photoelectron spectroscopy with an ultrafast\, widely tunable vacuum-ultraviolet light source has become available. Whereas HHG-based photoemission experiments at kilohertz repetition rates have been severely limited by the space-charge effects in the past\, the new development of compact HHG light sources with megahertz repetition rates allows for efficient photoemission and double photoemission experiments as is demonstrated here [1-7].\nI will present momentum-resolved photoemission experiments with photon energies between 14 and 40 eV that demonstrate the high performance of the setup [3\,4\,6]. In addition\, the combination of two time-of-flight spectrometers with coincidence detection electronics opens the way for efficient and long-term stable double photoemission experiments at variable photon energies [1\,6-8]. For the noble metal (001) surface of Ag\, we present a detailed analysis of double photoemission data and will compare them with similar data for the NiO(001) surface. The electron-electron pair distribution shows a sharp sum-energy onset\, which corresponds to one hole in the Ag 3d band (4.5 eV below the Fermi level) and a second excitation from the Ag sp band. Simultaneously\, an intense energy sharing between the electrons in the pair is visible indicating strong electron-electron correlations [5]. For thin films of C60\, a molecular-orbital resolved correlation energy is determined based on double photoemission data at various photon energies. \nReferences:\n[1]    M. Huth\, C.-T. Chiang\, A. Trützschler\, F. O. Schumann\, J. Kirschner\, and W. Widdra; Applied Physics Letters 104\, 061602 (2014).\n[2]    A. Blättermann\, C.-T. Chiang\, and W. Widdra; Physical Review A 89\, 043404 (2014).\n[3]    C.-T. Chiang\, M. Huth\, A. Trützschler\, M. Kiel\, F. O. Schumann\, J. Kirschner\, and W. Widdra\, New Journal of Physics 17\, 013035 (2015).\n[4]    C.-T. Chiang\, M. Huth\, A. Trützschler\, F. O. Schumann\, J. Kirschner\, and W. Widdra\, Electron Spectroscopy and Related Phenomena 200\, 15-21(2015).\n[5]     A. Trützschler\, M. Huth\, C.-T. Chiang\, R. Kamrla\, F. O. Schumann\, J. Kirschner\, and W. Widdra\, Phys. Rev. Lett. 118\, 136401(2017).\n[6]    M. Huth\, A. Trützschler\, C.-T. Chiang\, R. Kamrla\, F. O. Schumann\, and W. Widdra\, J. Appl. Phys. 124\, 164504 (2018).\n[7]     C.-T. Chiang\, A. Trützschler\, M. Huth\, R. Kamrla\, F. O. Schumann\, and W. Widdra\, Prog. Surf. Sci. 95\, 100572 (2020). \n  \nSpeaker Bio: Prof. Wolf Widdra is a Professor at the the Institute of Physics\, Martin-Luther-Universität Halle-Wittenberg\, Halle\, Germany. \n 
URL:https://qmi.miffanytark.com/event/special-seminar-wolf-widdra-institute-of-physics-martin-luther-universitat-halle-wittenberg-laser-based-double-photoemission-spectroscopy-at-surfaces/
CATEGORIES:Other seminars,UBC event
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240731T100000
DTEND;TZID=America/Vancouver:20240731T110000
DTSTAMP:20240719T155257Z
CREATED:20240719T155257Z
LAST-MODIFIED:20240719T155257Z
UID:7696-1722420000-1722423600@qmi.miffanytark.com
SUMMARY:Special Seminar: David Abergel – Chief Editor of Nature Physics: Inside Nature Physics
DESCRIPTION:Abstract: What happens to your paper after you submit it to a journal is not always clear from the outside\, but it’s helpful for authors to understand the editorial process so that they can navigate it smoothly. In this talk\, we will unpack this process and explain how editors make their decisions. We will introduce Nature Physics (and other journals in the Nature Portfolio) and describe how we see our role in the scientific community and what we are trying to achieve. Building on that\, we will discuss how we select papers for peer review based on the likely breadth of interest in the results that they contain\, and how we interpret the information in peer review reports in terms of technical and editorial concerns. We’ll also discuss some techniques for writing papers and leave plenty of time for questions and discussion. \nBio: Before joining Nature Physics in 2017\, David carried out theoretical research on graphene and other two-dimensional materials\, and topological materials. He completed a Ph.D at Lancaster University in 2007\, and then did post-doctoral work at the University of Manitoba (Canada) and the University of Maryland (USA) before undertaking an Assistant Professorship at Nordita\, the Nordic Institute for Theoretical Physics in Stockholm\, Sweden. David is based in Nature Physics’ Berlin office.
URL:https://qmi.miffanytark.com/event/special-seminar-david-abergel-chief-editor-of-nature-physics-inside-nature-physics/
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240905T100000
DTEND;TZID=America/Vancouver:20240905T100000
DTSTAMP:20240829T193256Z
CREATED:20240829T193256Z
LAST-MODIFIED:20240829T193256Z
UID:8002-1725530400-1725530400@qmi.miffanytark.com
SUMMARY:CM Seminar: Quantum Skyrmion Hall Effect\, Ashley Cook
DESCRIPTION:Time: 10:00 AM – 11:00 AM \nLocation: BRIM 311 \nAbstract: A great variety of topological phases have been classified as a consequence of discovery of the quantum Hall effect\, but this work has recently led to discovery of some topologically non-trivial phases of matter\, which contradict key assumptions of established classification schemes. These phases\, which are the topological skyrmion phases of matter\, multiplicative topological phases of matter\, and finite-size topological phases of matter\, necessitate a paradigm shift from the quantum Hall effect framework to that of the quantum skyrmion Hall effect\, in which the point charges of the quantum Hall effect are generalised to compactified p-branes. For compactification via fuzzification\, these compactified p-branes carrying charge are necessarily expressed in terms of angular momentum as quantum skyrmions. Ostensibly (d+1)-dimensional systems\, based on the number of Cartesian coordinates they possess\, can then in fact have D additional dimensions encoded in (pseudo)spin degrees of freedom\, and realize intrinsically (D+d+1)-dimensional topological states\, a finding supported by results in lattice tight-binding models. \nBio: Ashley Cook\, Group Leader\, Max Planck\, Dresden \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-ashley-cook/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240912T100000
DTEND;TZID=America/Vancouver:20240912T110000
DTSTAMP:20240829T221720Z
CREATED:20240829T221720Z
LAST-MODIFIED:20240829T221720Z
UID:8011-1726135200-1726138800@qmi.miffanytark.com
SUMMARY:CM Seminar: Ziliang Ye\, Sliding Ferroelectricity in Rhombohedral MoS2: A New Approach to Nonvolatilely Switch the Interaction between Light and Matter
DESCRIPTION:Location: BRIM 311 \nTime: 10:00 AM – 11:00 AM \nAbstract: The tunability in the stacking of layered materials with van der Waals bonding provides a new and powerful approach to engineer their physical properties. Sliding ferroelectricity is one such example where an electric field drives one layer of materials to move relative to its neighbours due to an out-of-plane electric polarization arising from interlayer coupling. Sliding ferroelectricity can therefore occur in traditionally non-ferroelectric materials and has been observed in artificially stacked boron nitrides and transition metal dichalcogenides (TMDs). In this talk\, I will show that such a hysteric phenomenon can occur in chemically synthesized rhombohedral molybdenum disulfide (3R-MoS2) crystals with pre-existing domain walls. I will first discuss our studies on domain characterization using photocurrent and scanning probe microscopy. I will then show that these polarization domains and their switching behavior can be probed by optical spectroscopy\, revealing the existence of a variety of switching pathways. Due to their strong excitonic effects and sliding ferroelectricity\, rhombohedral TMDs can be built into nonvolatile optical memories with high performances. \nSpeaker: Ziliang Ye\, Associate Professor and Principal Investigator\, Stewart Blusson Quantum Matter Institute
URL:https://qmi.miffanytark.com/event/cm-seminar-ziliang-ye-ferroelectric-switching-of-light-matter-interactions-in-rhombohedral-mos2/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240919T100000
DTEND;TZID=America/Vancouver:20240919T110000
DTSTAMP:20240903T214247Z
CREATED:20240903T214247Z
LAST-MODIFIED:20240903T214247Z
UID:8060-1726740000-1726743600@qmi.miffanytark.com
SUMMARY:CM Seminar: Quantum Anomalous Hall Effects in Rhombohedral Graphene Moiré Structures \, Adarsh Patri\, UBC
DESCRIPTION:Speaker: Adarsh Patri\, UBC. \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Quantum Anomalous Hall Effects in Rhombohedral Graphene Moiré Structures  \nAbstract: A recent series of experiments in two-dimensional moiré materials have discovered the physics of quantum Hall effect in the absence of an external magnetic field. These so-called “(Integer/Fractional) Quantum Anomalous Hall” phases have been observed in twisted transition metal dichalcogenide MoTe2 moiré heterostructure\, as well as more recently in pentalayer rhombohedral graphene aligned with a hexagonal Boron-Nitride (hBN) substrate. Unlike the standard theoretical framework of the quantum Hall effect\, where one has a flat band at the single-particle level\, these discoveries provide a fertile ground for exploring the minimal conditions that are required to realize and stabilize such exotic phases of matter. In this talk\, I will examine the microscopic origin of both the integer and fractional QAH phases in N-layer graphene aligned with hBN through a combination of Hartree-Fock methods and Exact Diagonalization. I will also discuss the delicate role of the moiré superlattice potential in determining the ultimate ground state in strongly-correlated two-dimensional moiré materials. Time-permitting\, I will also briefly touch on the phenomenology of the recently observed extended quantum anomalous Hall effect in pentalayer graphene aligned with hBN. \nBio: Adarsh completed his undergraduate degree at the University of Waterloo\, and his PhD at the University of Toronto under the supervision of Yong-Baek Kim in 2021. He was a postdoctoral research associate from 2021—2024 at the Massachusetts Institute of Technology working with Senthil Todadri.
URL:https://qmi.miffanytark.com/event/cm-seminar-adarash-patri-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240926T100000
DTEND;TZID=America/Vancouver:20240926T110000
DTSTAMP:20240903T214733Z
CREATED:20240903T214733Z
LAST-MODIFIED:20240903T214733Z
UID:8063-1727344800-1727348400@qmi.miffanytark.com
SUMMARY:CM Seminar:  Impact of Josephson junction materials on the performance of superconducting qubits\, Josh Mutus\, Rigetti Computing
DESCRIPTION:Speaker: Josh Mutus\, Rigetti Computing \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Impact of Josephson junction materials on the performance of superconducting qubits \nAbstract: Superconducting qubits are a leading modality for quantum computing\, offering a favorable balance between coherence\, gate times\, scalability\, and fidelity. I will explore the interplay between materials science and qubit performance\, with a particular focus on how the materials used in Josephson junctions (JJs) affect qubit behavior. The frequency of a qubit is largely determined by the properties of JJs\, which typically consist of amorphous oxide tunnel barriers. These barriers are also the likely location of most two-level systems (TLS) defects. Recently\, we discovered an Alternating-Bias Assisted Annealing (ABAA) process that enables us to fine-tune JJs to achieve the desired frequency. Characterizing these ABAA post-processed JJs provides insight into the structural and chemical bonding uniformity of the amorphous oxides after ABAA processing\, as well as the impact on qubit performance and TLS density.
URL:https://qmi.miffanytark.com/event/cm-seminar-josh-mutus-rigetti-computing/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241003T100000
DTEND;TZID=America/Vancouver:20241003T110000
DTSTAMP:20240903T214840Z
CREATED:20240903T214840Z
LAST-MODIFIED:20240903T214840Z
UID:8066-1727949600-1727953200@qmi.miffanytark.com
SUMMARY:CM Seminar: Rogerio de Sousa\, University of Victoria
DESCRIPTION:Speaker: Rogerio de Sousa\, University of Victoria \nTime: 10:00-11:00am \nLocation: BRIM 311 \n  \nCM Seminars take place every Thursday morning at BRIM 311. More information about the talk and speaker becomes available closer to the event’s date—watch this space for more!
URL:https://qmi.miffanytark.com/event/cm-seminar-rogerio-de-sousa-university-of-victoria/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241010T100000
DTEND;TZID=America/Vancouver:20241010T110000
DTSTAMP:20240917T154327Z
CREATED:20240917T154327Z
LAST-MODIFIED:20240917T154327Z
UID:8143-1728554400-1728558000@qmi.miffanytark.com
SUMMARY:CM Seminar: Atomic Cluster Expansion for "Learning" Many-Body Interaction\, Christoph Ortner\, UBC
DESCRIPTION:Speaker: Christoph Ortner\, UBC. \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Atomic Cluster Expansion for “Learning” Many-Body Interaction \nAbstract: The integration of machine learning (ML) into the traditional modeling workflows is replacing decades-old – often ad hoc – approximations (e.g.\, in constitutive laws) leading to new models that far outstrip their predecessors in accuracy and transferability. ”Pure” ML approaches are rarely successful but remarkable results can be achieved when integrated with domain knowledge. I will introduce a general formalism\, the Atomic Cluster Expansion\, for parameterizing many-body interaction and how it can be used for reduced-order modelling. Examples are taken from interatomic potentials\, coarse-grained MD\, and VMC.
URL:https://qmi.miffanytark.com/event/cm-seminar-atomic-cluster-expansion-for-learning-many-body-interaction-christoph-ortner-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241017T100000
DTEND;TZID=America/Vancouver:20241017T110000
DTSTAMP:20240903T215136Z
CREATED:20240903T215136Z
LAST-MODIFIED:20240903T215136Z
UID:8069-1729159200-1729162800@qmi.miffanytark.com
SUMMARY:CM Seminar: Quantum Sensation: a journey through arts and quantum physics\, Catherine Deletoille\, Quantum Studio
DESCRIPTION:Speaker: Catherine Deletoille\, Quantum Studio Artist from Paris\, France   \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Quantum Sensation: a journey through arts and quantum physics \nAbstract: After a presentation of her artistic path and research\, the painter Caroline Delétoille will share some insights about the “quantum sensation” art-science project embedded at the core of her upcoming residency. This research-creation based exhibition has been developed since the end of 2023 in close collaboration with a physicist and a philosopher. Its artistic creation and exploration will continue during the residency at the QMI laboratories.
URL:https://qmi.miffanytark.com/event/cm-seminar-catherine-deletoille/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241024T100000
DTEND;TZID=America/Vancouver:20241024T110000
DTSTAMP:20241013T232106Z
CREATED:20241013T232106Z
LAST-MODIFIED:20241013T232106Z
UID:8211-1729764000-1729767600@qmi.miffanytark.com
SUMMARY:CM Seminar: Advanced LIGO: building a new window to the universe with quantum matter\, Jess McIver\, UBC.
DESCRIPTION:Speaker: Jess McIver\, UBC. \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Have you ever wondered how the Advanced LIGO detectors can sense relative displacements more than 1\,000 times smaller than the width of a proton? This unprecedented sensitivity is enabled in part by thin film technology! In this talk\, we’ll tour the Advanced LIGO detectors to get a sense for how we can detect gravitational waves with laser interferometers. We’ll summarize the performance of today’s gravitational-wave detectors and what we’ve learned about the Universe with gravitational waves so far. Finally\, we’ll discuss the pivotal role of material science advances in developing future gravitational-wave detectors and unlocking the invisible Universe.
URL:https://qmi.miffanytark.com/event/cm-seminar-advanced-ligo-building-a-new-window-to-the-universe-with-quantum-matter-jess-mciver-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241031T100000
DTEND;TZID=America/Vancouver:20241031T110000
DTSTAMP:20240903T215321Z
CREATED:20240903T215321Z
LAST-MODIFIED:20240903T215321Z
UID:8071-1730368800-1730372400@qmi.miffanytark.com
SUMMARY:CM Seminar: Efficient microwave-optical conversion mediated by color centers in silicon\, Mohammad Khalifa\, UBC
DESCRIPTION:Speaker: Mohammad Khalifa\, UBC \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Quantum networks are expected to boost the quantum technology by enabling distributed quantum computing and quantum communication. A coherent converter between microwave and optical photons could enable the creation of these quantum networks where quantum information is locally processed in the microwave regime and distributed by optical photons. I will talk about the general requirements and challenges of building a microwave-optical converter with high conversion efficiency. Then\, I will introduce our proposed magneto-optic converter\, which is based on the effective nonlinearity of an ensemble of spin-bearing color centers implanted in silicon photonic resonator and coupled to a superconducting cavity. I will discuss the physics of the system and how it can be engineered to achieve near-unity conversion efficiency.
URL:https://qmi.miffanytark.com/event/cm-seminar-mohammad-khalifa-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241121T100000
DTEND;TZID=America/Vancouver:20241121T110000
DTSTAMP:20241105T212444Z
CREATED:20241105T212444Z
LAST-MODIFIED:20241105T212444Z
UID:8217-1732183200-1732186800@qmi.miffanytark.com
SUMMARY:CM Seminar: Topological qubits from fractional quantum spin Hall states\, Drew Potter\, UBC
DESCRIPTION:Speaker: Drew Potter\, UBC \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Topological qubits from fractional quantum spin Hall states  \nAbstract: The recent experiments have shown evidence for a fractional quantum spin Hall (FQSH) state in twisted MoTe2 bilayers. In this talk I will review these experiments\, survey some theoretical scenarios for candidate abelian and non-abelian FQSH orders. I will also describe a possible route towards building a topological quantum memory by interfacing FQSH states with superconductors\, and propose an all-electrical scheme to detect their topological ground-space degeneracy.
URL:https://qmi.miffanytark.com/event/cm-seminar-topological-qubits-from-fractional-quantum-spin-hall-states-drew-potter-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241128T100000
DTEND;TZID=America/Vancouver:20241128T110000
DTSTAMP:20240903T220429Z
CREATED:20240903T220429Z
LAST-MODIFIED:20240903T220429Z
UID:8079-1732788000-1732791600@qmi.miffanytark.com
SUMMARY:CM Seminar: Measurement induced criticality in monitored quantum systems\, Ehud Altman\, University of California\, Berkeley
DESCRIPTION:Speaker: Ehud Altman\, University of California\, Berkeley \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Measurement induced criticality in monitored quantum systems \nAbstract: A novel aspect of recent experiments with quantum devices is that measurements can play an active role in preparing the state of the system\, not just in diagnosing it. Unlike unitary evolution\, the quantum collapse induced by local measurements can have a highly non-local impact on entangled quantum states\, instantaneously destroying or creating new long distance correlations. I will review the surprising collective effects that can arise\, such as measurement induced phase transitions and new entanglement structures.  There is\, however\, a fundamental challenge to observing post-measurement correlations\, conditioned on the outcome of many-measurements with exponentially small Born probability of recurring. I will discuss how to resolve this post-selection problem by cross-correlating experimental data with results of an approximate classical model. This allows us to reframe the measurement induced transition as a transition in the ability of a classical intelligent agent to learn the quantum state.  \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-ehud-altman-university-of-california-berkeley/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241205T100000
DTEND;TZID=America/Vancouver:20241205T110000
DTSTAMP:20240903T215433Z
CREATED:20240903T215433Z
LAST-MODIFIED:20240903T215433Z
UID:8073-1733392800-1733396400@qmi.miffanytark.com
SUMMARY:CM Seminar: Shuyun Zhou\, Tsinghua University
DESCRIPTION:Speaker: Shuyun Zhou\, Tsinghua University \nTime: 10:00-11:00am \nLocation: BRIM 311 \n  \nCM Seminars take place every Thursday morning at BRIM 311. More information about the talk and speaker becomes available closer to the event’s date—watch this space for more!
URL:https://qmi.miffanytark.com/event/cm-seminar-shuyun-zhou-tsinghua-university/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241212T100000
DTEND;TZID=America/Vancouver:20241212T230000
DTSTAMP:20240903T215551Z
CREATED:20240903T215551Z
LAST-MODIFIED:20240903T215551Z
UID:8075-1733997600-1734044400@qmi.miffanytark.com
SUMMARY:CM Seminar: Sebastian ten Haa\, Majorana bound states in artificial Kitaev chains\, Delft University of Technology
DESCRIPTION:Speaker: Sebastian ten Haaf\, Delft University of Technology \nTime: 10:00-11:00am \nLocation: BRIM 311 \n  \nTitle: “Majorana bound states in artificial Kitaev chains” \nAbstract: “The Kitaev chain model predicts the ability to engineer localized Majorana bound states: non-Abelian zero-energy excitations that are protected from local perturbations\, which can be utilized for realizing robust quantum computation schemes. Recent work on InSb nanowires demonstrated that the ingredients for a minimal Kitaev chain\, consisting of two sites\, can be engineered by coupling quantum dots (QDs) via two second-order processes: crossed Andreev reflection and elastic co-tunnelling. To open up the path to more complex experiments\, we implemented this system in a two-dimensional electron gas (2DEG). In this talk\, I will detail the theoretical background and our experimental implementation of the Kitaev chain in the InSbAs 2DEG platform. I will highlight recent results obtained on a chain consisting of three quantum dots\, where we find that the presence of zero energy modes on the outer QDs is correlated with a bulk excitation gap in the middle QD\, demonstrating key properties of the Kitaev chain.”
URL:https://qmi.miffanytark.com/event/cm-seminar-srijit-goswami-delft-university-of-technology/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250109T100000
DTEND;TZID=America/Vancouver:20250109T110000
DTSTAMP:20240903T220310Z
CREATED:20240903T220310Z
LAST-MODIFIED:20240903T220310Z
UID:8077-1736416800-1736420400@qmi.miffanytark.com
SUMMARY:CM Seminar: How nonlinearity distorts the evidence for photoinduced superconductivity\, J. Steven Dodge\, SFU
DESCRIPTION:Speaker: J. Steven Dodge\, SFU \nAbstract: How nonlinearity distorts the evidence for photoinduced superconductivity \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Over a decade of research has suggested that some metallic compounds can be transformed into superconductors by illuminating them with intense beams of laser light. Recently\, we have shown that the experimental evidence for this effect could literally be an optical illusion produced by the high-intensity laser illumination. By examining several influential results on photoinduced superconductivity in K3C60\, we have identified a fundamental flaw in their analysis that exaggerates the apparent photoinduced changes to the conductivity. When we account for this error\, we find evidence that photoexcitation produces a moderate enhancement of the conductivity\, but that there is no need to appeal to a photoinduced phase transition to a superconducting state. Subsequent work on K3C60 has provided quantitative support for our analysis. After discussing our reanalysis of experiments on K3C60\, I will describe how this error also distorts the evidence for photoinduced superconductivity in the normal state of cuprate superconductors and in the charge-transfer salt BEDT-TTF. Finally\, I will discuss how our reinterpretation raises new and interesting questions about the interaction of light with matter. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-j-steven-dodge-sfu/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250123T100000
DTEND;TZID=America/Vancouver:20250123T110000
DTSTAMP:20250115T234034Z
CREATED:20250115T234034Z
LAST-MODIFIED:20250115T234034Z
UID:8499-1737626400-1737630000@qmi.miffanytark.com
SUMMARY:CM Seminar: Just-in-time compiling Shor's algorithm with PennyLane and Catalyst\, Olivia Di Matteo\, UBC
DESCRIPTION:Speaker: Olivia Di Matteo\, UBC \nTime: 10:00-11:00am \nLocation: BRIM 311 \n\nAbstract: As quantum computing hardware continues to improve\, so must the tools we use to write quantum algorithms. There is a growing need for more expressive quantum programming languages that enable developers to write code at higher levels of abstraction than quantum circuits. This\, in turn\, necessitates robust and automated compilers that can generate optimized sequences of quantum operations in a scalable way. Such compilers are especially important for algorithms with many interdependent classical and quantum subroutines\, such as Shor’s factoring algorithm. \nIn this talk I will provide a pedagogical introduction to Shor’s algorithm by presenting its implementation at varying levels of abstraction. While its high-level subroutines are straightforward to express\, compilation and optimization incurs a large overhead due to the algorithm’s randomized nature. To that end\, I will highlight on-going work on a fully just-in-time-compiled implementation using PennyLane and Catalyst. I’ll discuss its scaling\, practical resource requirements\, implementation tricks (and unique quirks)\, and the feasibility of executing it on near-term hardware.
URL:https://qmi.miffanytark.com/event/just-in-time-compiling-shors-algorithm-with-pennylane-and-catalyst/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250130T100000
DTEND;TZID=America/Vancouver:20250130T110000
DTSTAMP:20240903T220549Z
CREATED:20240903T220549Z
LAST-MODIFIED:20240903T220549Z
UID:8081-1738231200-1738234800@qmi.miffanytark.com
SUMMARY:CM Seminar: Connected Network Model for the Mechanical Loss of Amorphous Materials\, Steven Blaber\, UBC
DESCRIPTION:Speaker: Steven Blaber\, UBC \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: For over 50 years\, the two-level system (TLS) model has stood as the prevailing description of thermal and acoustic properties of amorphous solids. Atomistic modeling shows that TLS are not independent as typically assumed\, but form a sparse\, interconnected network. I will discuss the mechanical loss in amorphous solids based on the nonequilibrium thermodynamics of connected networks\, providing a major advance beyond the quintessential two-level system model\, and revealing new avenues for the study amorphous materials. Amorphous mirror coatings with exceptionally low mechanical loss are critical components in the next generation of gravitational wave detectors. I will also briefly discuss how these results could impact the TLS model for dielectric loss in superconducting qubits. \n  \nCM Seminars take place every Thursday morning at BRIM 311. More information about the talk and speaker becomes available closer to the event’s date—watch this space for more!
URL:https://qmi.miffanytark.com/event/cm-seminar-clara-santato-polytechnique-montreal/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250206T100000
DTEND;TZID=America/Vancouver:20250206T110000
DTSTAMP:20240903T220717Z
CREATED:20240903T220717Z
LAST-MODIFIED:20240903T220717Z
UID:8083-1738836000-1738839600@qmi.miffanytark.com
SUMMARY:CM Seminar: Direct Integration of 2D Materials for Next Generation Electronic Devices Zak Al Balushi\, University of California Berkeley
DESCRIPTION:Speaker: Zak Al Balushi\, University of California Berkeley \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Two-dimensional (2D) semiconductors\, such as molybdenum disulfide (MoS2)\, are emerging as key materials for next-generation electronics\, addressing challenges in the miniaturization of silicon-based technologies. Despite progress in scaling-up 2D materials\, integrating them into functional devices remains challenging\, particularly in the context of three-dimensional integration. In the first part of my talk\, I will present a scalable method for growing high-quality mono- to few-layer MoS2 on large wafers using a spin-on precursor\, molybdenum ethyl xanthate. This approach facilitates the formation of a metastable amorphous molybdenum trisulfide phase\, which we can then be leveraged for direct heterogeneous integration. We thoroughly investigate the growth dynamics and associated versatile features using comprehensive characterization\, reactive force-field molecular dynamics simulations\, and Density Functional Theory. Our method allows precise control over film thickness\, grain size\, and defect density\, yielding wafer-scale monolayer MoS2 with reliable optical properties comparable to as-exfoliated samples. Additionally\, we achieve area-selective formation of MoS2 and the direct deposition of sub-5 nm high-k oxides using atomic layer deposition\, without the need for seeding or surface functionalization. This process enables the fabrication of complex superlattice structures\, top-gated FETs\, and memristor devices\, all from a single-source chemistry. Our findings highlight the versatility of spin-on metal xanthate chemistries for the synthesis and integration of transition metal dichalcogenides (MoS2\, WS2\, NbS2\, ReS2\, etc.)\, paving the way for advanced nanoscale fabrication processes and enhancing the commercial viability of 2D materials in electronics. \nMoreover\, forming heavily doped regions in two-dimensional materials\, like graphene\, are a steppingstone to the design of emergent devices and heterostructures. In the second part of my talk\, I will present a selective-area approach to tune the work-function and carrier density in monolayer graphene by spatially synthesizing sub-monolayer gallium beneath the 2D-solid.  Localized metallic gallium is formed via precipitation from an underlying diamond-like carbon (DLC) film that was spatially implanted with gallium-ions. Controlling the interfacial precipitation process with annealing temperature allows for spatially precise ambipolar tuning of the graphene work-function that remains stable even in ambient conditions. Our theoretical studies corroborated the role of the gallium at the heterointerface on charge transfer and electrostatic doping of the graphene overlayer\, with charge carrier densities from ~ (hole-doped) to  (electron-doped) as measured by in-situ and ex-situ measurements. The extension of this doping scheme to other implantable elements into DLC provides a new means of exploring the physics and chemistry of highly doped overlayed two-dimensional materials. \nFinally\, metalorganic chemical vapor deposition (MOCVD) has become a pivotal technique for developing wafer-scale TMD 2D materials. If time permits\, I will discuss our recent findings on the impact of MOCVD growth conditions on achieving uniform and selective polymorph phase control of MoTe2 over large wafers. We demonstrated the controlled and uniform growth of few-layer MoTe2 in pure 2H\, 1T’\, and mixed-phases at various temperatures on up to 4-inch C-plane sapphire wafers with hexagonal boron nitride templates. At 600oC\, high-quality 2H-MoTe2 was obtained within a narrow temperature window\, verified with absorption and TEM analysis. In addition\, we observed strong exciton-phonon coupling effects in multiwavelength Raman spectroscopy when the excitation wavelength was in resonance with the C-exciton. Our findings indicate that temperature-induced Te vacancies play a crucial role in determining the MoTe2 phase. This study highlights the importance of precise control over the MOCVD growth temperature to engineer the MoTe2 phase of interest for device applications. \n\nAbout the speaker: Zak Al Balushi is an assistant professor in the department of Materials Science and Engineering at University of California\, Berkeley\, and a faculty scientist in the Materials Science Division at the Lawrence Berkeley National Laboratory. Zakaria received his B.S. (2011)\, M.S. (2012) in Engineering Science and his Ph.D. (2017) in Materials Science and Engineering all from The Pennsylvania State University. His early work focused on integration and fabrication of silicon nanowire devices\, then on the growth of group-III nitride semiconductors\, in situ metrology during MOCVD growth\, epitaxial graphene and the discovery and characterization of unconventional low-dimensional materials and heterostructures. Prior to his appointment at the University of California\, Berkeley\, he held two postdoctoral fellowships: the Resnick Prize Fellowship in Applied Physics and Materials Science and the NSF Alliances for Graduate Education and the Professoriate (AGEP) Fellowship both at the California Institute of Technology under the supervision of Professor Harry Atwater. At Caltech\, he focused on the synthesis and characterization of phase transformations in transition metal dichalcogenides 2D materials. At the University of California\, Berkeley\, his research group continues to expand in this area and beyond\, creating new synthesis and integration schemes for emerging low-dimensional materials. He is currently serving on the editorial board of Communications Materials\, is an elected executive committee member for the American Association for Crystal Growth and recently named “Four rising stars who are reshaping nanoscience” by Nature [Nature 608\, S12-S13 (2022)]. He is also a SK Hynix Faculty Fellow\, Society of Hellman Fellow\, a CIFAR Azrieli Global Scholar in Quantum Materials and a recipient of the NSF CAREER and Micron Corporation Early Career Awards in 2022.
URL:https://qmi.miffanytark.com/event/cm-seminar-zak-al-balushi-university-of-california-berkeley/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250220T100000
DTEND;TZID=America/Vancouver:20250220T110000
DTSTAMP:20240903T220848Z
CREATED:20240903T220848Z
LAST-MODIFIED:20240903T220848Z
UID:8085-1740045600-1740049200@qmi.miffanytark.com
SUMMARY:CM Seminar: Michael Foss-Feig\, Quantinuum
DESCRIPTION:Speaker: Michael Foss-Feig\, Quantinuum \nTime: 10:00-11:00am \nLocation: BRIM 311 \n  \nCM Seminars take place every Thursday morning at BRIM 311. More information about the talk and speaker becomes available closer to the event’s date—watch this space for more!
URL:https://qmi.miffanytark.com/event/cm-seminar-michael-foss-feig-quantinuum/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250306T100000
DTEND;TZID=America/Vancouver:20250306T110000
DTSTAMP:20250221T001217Z
CREATED:20250221T001217Z
LAST-MODIFIED:20250221T001217Z
UID:8697-1741255200-1741258800@qmi.miffanytark.com
SUMMARY:CM Seminar: Signature of preformed pairs in angle-resolved photoemission spectroscopy\, Janez Bonca\, University of Ljubljana
DESCRIPTION:Speaker: Janez Bonca\, University of Ljubljana \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: We use density matrix renormalization group (DMRG) and variational exact diagonalization (VED) to calculate the single-electron removal spectral weight for the Hubbard-Holstein model at low electron densities. Tuning the strength of the electron-phonon coupling and of the Hubbard repulsion allows us to contrast the results for a liquid of polarons versus a liquid of bipolarons. The former shows spectral weight up to the Fermi energy\, as expected for a (uncorrelated) metal. The latter has a gap in its spectral weight\, set by the bipolaron binding energy\, although this is also a (strongly correlated) metal. This difference suggests that angle-resolved photoemission spectroscopy could be used to identify liquids of pre-formed pairs. Furthermore\, we show that the liquid of bipolarons is well approximated by an ensemble of bosons that are hard-core in momentum space\, filling the states inside the Fermi sea but otherwise non-interacting [1]. We have also generalized the calculation to allow for a finite optical phonon dispersion. The spectral function is significantly influenced by the dispersion\, particularly in systems with strong electron-phonon coupling. The sign of the curvature of the phonon band plays a crucial role in the distribution of spectral weight [2]. \nReferences \n• [1] K. Kovaˇc\, A. Nocera\, A. Damascelli\, J. Bonˇca\, and M. Berciu\, to appear in PRL\, arXiv:2409.14490 \n• [2] K. Kovaˇc and J. Bonˇca\, arXiv:2410.11537
URL:https://qmi.miffanytark.com/event/cm-seminar-signature-of-preformed-pairs-in-angle-resolved-photoemission-spectroscopy-janez-bonca-university-of-ljubljana/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250313T100000
DTEND;TZID=America/Vancouver:20250313T110000
DTSTAMP:20240903T221219Z
CREATED:20240903T221219Z
LAST-MODIFIED:20240903T221219Z
UID:8089-1741860000-1741863600@qmi.miffanytark.com
SUMMARY:CM Seminar: Electron-hole atomic double layers: towards high-temperature exciton condensation\, Jie Shan\, Cornell University
DESCRIPTION:Speaker: Jie Shan\, Cornell University \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTopic: Electron-hole atomic double layers: towards high-temperature exciton condensation \nAbstract: Excitons\, bound electron-hole pairs\, in semiconductors are bosons that can form condensates. With a much smaller mass than atoms\, they have been predicted to condense at a much higher temperature scale. Although the concept has been understood for more than sixty years\, experimental realization of exciton condensates or superfluids has remained challenging. In this talk\, I will discuss our recent efforts in creating a high-density equilibrium exciton fluid in atomic double layers made of semiconducting transition metal dichalcogenides. I will present results from both thermodynamics and transport measurements that establish high-temperature excitonic insulators. I will also discuss the physics of doped excitonic insulators that can support a Bose-Fermi mixture and an equilibrium trion fluid. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-jie-shan-cornell-university/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250327T100000
DTEND;TZID=America/Vancouver:20250327T110000
DTSTAMP:20240903T221412Z
CREATED:20240903T221412Z
LAST-MODIFIED:20240903T221412Z
UID:8091-1743069600-1743073200@qmi.miffanytark.com
SUMMARY:CM Seminar: Shedding nano-light on quantum materials\, Columbia University\, Dmitri Basov
DESCRIPTION:Speaker: Dmitri Basov \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Optical spectroscopies have contributed immensely to the present understanding of metals\, semiconductors and superconductors. Unfortunately\, optics encounters problems when it comes to “seeing” effects at length scales below the diffraction limit of light and also with probing physics outside of the light cone. Both capabilities are highly desirable for the exploration of quantum physics of new quantum materials. Over the last decade or so\, our group has developed and deployed scanning-probe nano-optical methods for the nano-scale spectroscopy and imaging of complex materials. In this talk\, I will discuss our progress with the understanding of the electronic phenomena in atomically layered van der Waals (vdW) materials\, all empowered by deeply subdiffractional nano-light imaging. I will focus on two recent results: 1) Good plasmons in a bad metal: MoOCl2 is the latest addition to hyperbolic vdW materials with non-trivial electrodynamics spanning a broad range of frequencies from mid-IR to visible /Frank Ruta et al. Science 387\, 786 (2025)/; 2) vdW waveguide quantum electrodynamics: we observed notable Purcell enhancement of the spontaneous emission produced by MoTe2 monolayers integrated in WSe2 waveguides /Sam Moore et al. Nature Photonics (2025)/. \nDmitri N. Basov (PhD 1991) is a Higgins professor and Chair of the Department of Physics at Columbia University [http://infrared.cni.columbia.edu]\, the Director of the DOE Energy Frontiers Research Center on Programmable Quantum Materials [since 2018] and co-director of Max Planck Society – New York Center for Nonequilibrium Quantum Phenomena [2018-2030]. He has served as a professor (1997-2016) and Chair (2010-2015) of Physics\, University of California San Diego. Research interests include: physics of quantum materials\, superconductivity\, two-dimensional materials\, infrared nano-optics. Prizes and recognitions: Sloan Fellowship (1999)\, Genzel Prize (2014)\, Humboldt research award (2009)\, Frank Isakson Prize\, American Physical Society (2012)\, Moore Investigator (2014\, 2020)\, K.J. Button Prize (2019)\, Vannevar Bush Faculty Fellowship (U.S. Department of Defense\, 2019)\, National Academy of Sciences (2020). \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-columbia-university-dmitri-basov/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250403T080000
DTEND;TZID=America/Vancouver:20250403T170000
DTSTAMP:20250115T235034Z
CREATED:20250115T235034Z
LAST-MODIFIED:20250115T235034Z
UID:8505-1743667200-1743699600@qmi.miffanytark.com
SUMMARY:CM Seminar: Complexity in Josephson Matter\, Charles Marcus\, University of Washington
DESCRIPTION:Speaker: Charles Marcus\, University of Washington \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Hybrid superconductors-semiconductor heterostructures allow voltage control of carrier density in superconducting systems. We use these materials to investigate novel gate-controlled arrays of Josephson junctions in a variety of geometries\, examining the interplay of quantum coherence\, Coulomb interaction\, and frustration. Using the example of the dice lattice\, I will draw connections between protected quantum information and quantum phase transitions in two dimensions.
URL:https://qmi.miffanytark.com/event/cm-seminar-charles-marcus-university-of-washington/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250414T100000
DTEND;TZID=America/Vancouver:20250414T110000
DTSTAMP:20250409T165120Z
CREATED:20250409T165120Z
LAST-MODIFIED:20250409T165120Z
UID:8823-1744624800-1744628400@qmi.miffanytark.com
SUMMARY:Special Seminar: Quasiparticle interference imaging of magnetic-field tuned states in the strontium ruthenates. Peter Wahl\, University of St Andrews.
DESCRIPTION:Speaker: Peter Wahl\, University of St Andrews and University of Bonn. \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: The phenomenology and radical changes seen in materials properties traversing a quantum phase transition has captivated condensed matter research over the past decades. Strong electronic correlations lead to novel ground states\, including magnetic order\, nematicity and unconventional superconductivity. To provide a microscopic model for these requires knowledge of the electronic structure in the vicinity of the Fermi energy. The strontium ruthenates provide a family of ideal model systems to explore this physics using spectroscopic techniques: they exhibit a quasi-two-dimensional electronic structure and occur as single-\, double- and triple-layer compounds with similar crystal structure but disparate ground states ranging from unconventional superconductivity via metamagnetism to itinerant ferromagnetism. In the metamagnetic compounds\, spectroscopic information about the low energy electronic structure would allow verification of different scenarios that have been proposed to explain their exotic properties. I will present spectroscopic imaging of the electronic structure performed at temperatures down to 100mK1 and in vector-magnetic fields\, and discuss the implications for the low energy electronic structure. Notably\, for several of the strontium ruthenates the surface provides a platform to study the properties of the electronic structure under conditions not accessible in the bulk.2\,3 \nThis work was done in close collaboration with C.A. Marques\, L.C. Rhodes\, M. Naritsuka\, I. Benedičič\, as well as colleagues from the University of St Andrews\, CNR SPIN\, and the Max Planck Institute for the Chemical Physics of Solids. \n\nReferences:\n\n[1] Marques et al.\, Atomic-scale imaging of emergent order at a magnetic-field-induced Lifshitz transition\, Sci. Adv. 8\, eabo7757 (2022). \n[2] Kreisel et al.\, Quasiparticle Interference of the van-Hove singularity in Sr2RuO4\, npj Quantum Materials 6\, 100 (2021). \n[3] Marques et al. Magnetic-Field Tunable Intertwined Checkerboard Charge Order and Nematicity in the Surface Layer of Sr2RuO4. Adv. Mat. 33\, 2100593 (2021).
URL:https://qmi.miffanytark.com/event/special-seminar-quasiparticle-interference-imaging-of-magnetic-field-tuned-states-in-the-strontium-ruthenates-peter-wahl-university-of-st-andrews/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250506T090000
DTEND;TZID=America/Vancouver:20250508T170000
DTSTAMP:20250319T180621Z
CREATED:20250319T180621Z
LAST-MODIFIED:20250319T180621Z
UID:8723-1746522000-1746723600@qmi.miffanytark.com
SUMMARY:Max Planck-UBC-UTokyo Center for Quantum Materials Summer School 2025
DESCRIPTION:Magnetism: From Exotic States of Matter to Quantum Technologies\nDate: May 6 to May 8\, 2025 \nLocation: Room 2020/2030\, Fred Kaiser Building\, University of British Columbia (2332 Main Mall\, Vancouver\, BC V6T 1Z4\, Canada) \nRegistration: Registrations are now closed. \nFor inquires\, please contact: events@qmi.ubc.ca \nSynopsis: Magnetism is a cornerstone of condensed matter physics\, exhibiting a diverse range of phenomena from classical spin configurations to exotic quantum states. This school will cover major developments in the field\, including altermagnetism\, frustrated magnetism\, and transport in magnetic materials. Participants will be introduced to both theoretical foundations and experimental techniques relevant to magnetic materials. \nMagnetism also plays a vital role in emerging quantum technologies\, such as spin-based quantum information processing and spintronics. The school will offer an interdisciplinary perspective on how magnetic systems can enable future technological applications. Through lectures and discussions led by experts\, the program aims to provide early-career researchers with the tools to tackle open problems and inspire new collaborations. \nAttendance: The school is aimed at students and postdocs working with supervisors at Max Planck Institutes\, University of Tokyo and UBC. All participants must register to attend (registrations are now closed). All participants are encouraged to present a poster showcasing their research. \nInvited speakers: Kentaro Kitagawa (UTokyo)\, Akito Sakai (UTokyo)\, Bernhard Keimer (MPI Stuttgart)\, Hao Tjeng (MPI CPFS)\, Libor Smejkal (MPI PKS)\, Sarah Dunsinger (SFU)\, Alannah Hallas (UBC)\, George Sawatzky (UBC)\, Mohammad Khalifa (UBC)\, Rafael Haenel (Photonics Inc.)\, Ashley Nicole Warner (D-Wave Systems). \nSummer-School-2025-Program
URL:https://qmi.miffanytark.com/event/max-planck-ubc-u-tokyo-centre-for-quantum-materials-summer-school-2025/
LOCATION:Fred Kaiser Building\, UBC\, Room 2020/2030\, 2332 Main Mall\, Vancouver\, British Columbia\, V6T 1Z4\, Canada
END:VEVENT
END:VCALENDAR