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“From Rydberg spin-liquids to non-Abelian
anyons in synthetic matter”
Date: |
Download-files: |
Time: |
Thursday, 13 Jan. 2022 |
Video-Recording for any system with MP4-support
- Video.mp4 (ca. 284 Mb) |
15:15 – 16:15
|
Speaker today: Ashvin Vishwanath (Harvard University)
Abstract:
In contrast to ordered states such as ferromagnets
or Bose Einstein condensates,
quantum systems can realize an entirely
new form of emergence termed intrinsic
topological order (ITO). Examples include
the fractional quantum Hall states
and spin liquids whose unique properties
hold promise for fault-tolerant quantum
computing. However, ITOs are notoriously
hard to realize experimentally.
For example, quantum spin liquids were
proposed by Anderson in 1973 but remain
to be identified. Besides the tendency for
systems to order, the lack of clear
experimental signatures makes detection
challenging. In this talk, I will describe
our theoretical proposal to create ITO in
synthetic matter platforms such as
Rydberg atom arrays, by leveraging their
tunability. Further, I will outline ideas
for measuring non-local `string'
correlations which characterize ITOs, and briefly
summarize the experimental progress
towards these goals. Finally, I will describe
our ongoing exploration of new approaches
to efficiently realize many kinds of ITOs,
including fractons and non-Abelian anyons
in synthetic matter.
Brief CV
Ashvin Vishwanath is professor in physics
at Harvard University.
He is elected member of the American
Academy of Arts and Sciences.
He is recipient of Europhysics Prize,
Simons Investigator Award,
Guggenheim Fellowship and APS Fellow.
He is currently serving as director of
Simons Collaboration on Ultra Quantum Matter.