BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Stewart Blusson Quantum Matter Institute - ECPv6.18.2//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
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
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Vancouver
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20230312T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20231105T090000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20240310T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20241103T090000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20250309T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20251102T090000
END:STANDARD
END:VTIMEZONE
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
END:VCALENDAR