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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:20230202T100000
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SUMMARY:CM Seminar: Patrick Ledwith – Harvard  University: Vortexability Chern bands in Twisted and Strained Graphene
DESCRIPTION:Patrick Ledwith – Harvard University \nTitle: Vortexability Chern bands in Twisted and Strained Graphene \nAbstract: Fractional Chern insulators realize the remarkable physics of the fractional quantum Hall effect (FQHE) in crystalline systems with Chern bands. The lowest Landau level (LLL) is known to host the FQHE\, but not all Chern bands are suitable for realizing fractional Chern insulators (FCI). Previous approaches to stabilizing FCIs focused on mimicking the LLL through momentum space criteria. Here instead we take a real-space perspective by introducing the notion of vortexability. Vortexable Chern bands admit a fixed operator that introduces vortices into any band wavefunction while keeping the state entirely within the same band. Vortexable bands admit trial wavefunctions for FCI states\, akin to Laughlin states. In the absence of dispersion and for sufficiently short ranged interactions\, these FCI states are the ground state — independent of the distribution of Berry curvature. Vortexable Chern bands were found to emerge naturally in chiral twisted graphene\, and fractional Chern insulators were subsequently observed experimentally. They were also recently proposed in periodically strained graphene. \nBio: Patrick Ledwith grew up near Philadelphia\, Pennsylvania. He got his undergraduate degree in Physics and Mathematics at MIT. There he worked with Leonid Levitov on electron hydrodynamics\, discovering and elucidating long-lived collective excitations in two-dimensional electron gases. He is now a graduate student working in Ashvin Vishwanath’s group. Here he has worked on several aspects of moiré materials including fractional Chern insulators\, superconductivity\, correlated insulators\, and topological charge density waves. He has been especially interested in developing analytic approaches to fractional Chern insulators. He has applied these methods to twisted bilayer graphene where they work especially well. He subsequently partnered with Amir Yacoby’s group in realizing and understanding experimentally observed fractional Chern insulating states at small magnetic fields. In his free time\, he likes to cook and play video games with his dog.
URL:https://qmi.miffanytark.com/event/cm-seminar-patrick-ledwith-harvard-university-vortexability-chern-bands-in-twisted-and-strained-graphene/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
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DTSTART;TZID=America/Vancouver:20230209T100000
DTEND;TZID=America/Vancouver:20230209T110000
DTSTAMP:20230207T184815Z
CREATED:20230207T184815Z
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SUMMARY:CM Seminar:  Dmitri Pikulin – Microsoft: Aspects of Microsoft’s recent topological gap study
DESCRIPTION:Dmitri Pikulin – Microsoft \nTitle: Aspects of Microsoft’s recent topological gap study \nAbstract: I will discuss the theory and data analysis techniques behind the recent study searching for Majorana zero modes. I will describe how the transport techniques can help identify the boundary and bulk signatures of the topological phase. The analytical insight is confirmed by extensive numerical study and data analysis. I will finish with an example of an experimental observation.
URL:https://qmi.miffanytark.com/event/cm-seminar-dmitri-pikulin-microsoft-aspects-of-microsofts-recent-topological-gap-study/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
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DTSTART;TZID=America/Vancouver:20230221T140000
DTEND;TZID=America/Vancouver:20230221T150000
DTSTAMP:20230131T230452Z
CREATED:20230131T230452Z
LAST-MODIFIED:20230131T230452Z
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SUMMARY:Ars Scientia Artist Talks 2023: Algorithmic Allegories by JG Mair
DESCRIPTION:Join visual/media artist and Ars Scientia Resident\, JG Mair\, for a discussion on his art practice and experiences as a collaborative participant in Ars Scientia. As part of his talk\, Mair will present one of his major works Chroma Chamber\, a web-based new media art installation that investigates human expectations of vision and machine algorithms by programmatically collating real-time Google image results to surround the viewer with the distilled colour of the words they speak.  \nFunded by UBC’s Research Excellence Cluster program\, Ars Scientia is a tripartite partnership between UBC’s Blusson QMI\, the Department of Physics and Astronomy and The Morris and Helen Belkin Art Gallery\, fostering new modes of knowledge exchange across the arts\, sciences and their pedagogies. \n  \nDate & time: Feb 21\, 2:00-3:00pm \nLocation: 311\, Brimacombe Building (2355 East Mall\, Vancouver\, BC V6T 1Z4) \nFor more information on this event\, please click here. \n  \n  \nIMAGE (ABOVE): AN ARS SCIENTIA COLLABORATION BETWEEN VISUAL ARTIST JG MAIR AND PHYSICIST ALANNAH HALLAS AT BLUSSON QMI; THE TWO WORKED TOGETHER IN HALLAS’S LAB TO TURN “INSIGHTFUL FAILURES” OF HIGH-ENTROPY OXIDES (A TYPE OF QUANTUM MATERIAL) INTO AN ARTIST’S MEDIUM – PAINT. PHOTO: RACHEL TOPHAM PHOTOGRAPHY.
URL:https://qmi.miffanytark.com/event/ars-scientia-artist-talks-2023-algorithmic-allegories-by-jg-mair/
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