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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-9345
DTSTART:20251023T150000Z
DTEND:20251023T230000Z
DTSTAMP:20260405T165750Z
LAST-MODIFIED:20251014T050325Z
LOCATION: 5310 Chamberlin
SUMMARY:Multi-Partite Entanglement and Spectral Witness in Quantum Mat
 erials\, R. G. Herb Condensed Matter Seminar\, Yao Wang\, Emory Univer
 sity
DESCRIPTION:The rapidly advancing field of quantum materials demands i
 ncreasingly precise methods for characterizing and controlling entangl
 ement. While early progress was made in quantum optics\, extending the
 se approaches to complex many-body systems in quantum materials remain
 s a major challenge. In this talk\, I will introduce the entanglement 
 witness framework for characterizing the bounds of entanglement depth 
 using solid-state spectroscopies. In the first half of the talk\, I wi
 ll begin with the detection of spin entanglement in quantum magnets th
 rough the quantum metrology and spin quantum Fisher information (QFI).
  These metrics can be accessed via inelastic neutron scattering and re
 sonant inelastic x-ray scattering (RIXS). Importantly\, RIXS provides 
 a route to extend such probes far out of equilibrium\, enabling the co
 ntrol of entanglement with light. In the second half of the talk\, I w
 ill move beyond entanglement among distinguishable local modes to expl
 ore entanglement in systems of indistinguishable fermions. I will pres
 ent a generalized framework for multi-particle entanglement among elec
 trons\, based on the cumulant reduced density matrix and the nonlinear
  response characteristics of RIXS.
URL:https://www.physics.wisc.edu/events/?id=9345
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