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CALSCALE:GREGORIAN
X-WR-CALNAME:Examining topology and thermodynamics using quantum computers
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260817T045740Z
UID:tag:localist.com\,2008:EventInstance_39508592954532
DTSTART:20220330T173000Z
DTEND:20220330T183000Z
DESCRIPTION:Register Here:\nhttps://harvard.zoom.us/webinar/register/WN_q8r
 I_YJWS2GiLNyxVADNKA\n\n\nQuantum hardware has advanced to the point where 
 it is now possible to perform simulations of physical systems and elucidat
 e their topological and thermodynamic properties\, which we will discuss i
 n this talk. I will give a brief introduction to quantum computing and why
  they might be useful tools for solving problems in condensed matter physi
 cs and beyond. Following that\, I will present a perspective on thermodyna
 mics of quantum systems ideally suited to quantum computers\, namely the z
 eros of the partition function\, or Lee-Yang zeros. We developed quantum c
 ircuits to measure the Lee-Yang zeros\, and used these to reconstruct the 
 thermodynamic partition function of the XXZ model. The zeros qualitatively
  show the cross-over from an Ising-like regime to an XY-like regime\, maki
 ng this measurement ideally suitable in a NISQ environment. If time permit
 s\, I will discuss our demonstration of how topological properties of phys
 ical systems can be measured on quantum computers. We leverage the holonom
 y of the wavefunctions to obtain a noise-free measurement of the Chern num
 ber\, which we apply to an interacting fermion model.
LOCATION:
SUMMARY:Examining topology and thermodynamics using quantum computers
URL;VALUE=URI:https://events.seas.harvard.edu/event/examining_topology_and_
 thermodynamics_using_quantum_computers
CATEGORIES:Colloquia / Seminar / Lecture
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