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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-5013
DTSTART:20190214T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260312T102531Z
LAST-MODIFIED:20190211T150459Z
LOCATION:5310 Chamberlin Hall
SUMMARY:Quantum realizations of non-Hermitian (PT-symmetric) systems\,
  R. G. Herb Condensed Matter Seminar\, Prof. Yogesh Joglekar\, Indiana
 polis
DESCRIPTION:Open systems with gain or losses\, or both\, described by 
 non-Hermitian Hamiltonians\, have been a subject of intense research r
 ecently. 
\nIn classical optical systems\, the effect of exceptional-p
 oint degeneracies on their dynamics has been observed through remarkab
 le phenomena 
\nsuch as the parity-time (PT) symmetry breaking transit
 ion\, asymmetric mode switching\, and optimal energy transfer. 
\nAfte
 r a brief history of the field of PT-symmetry\, started by Carl Bender
  and co-workers\, I will discuss quantum realizations of such systems 
 with 
\nsingle photons\, ultracold atoms\, and superconducting transmo
 n circuits. Results include observation of PT transitions at vanishing
 ly small non-Hermiticity 
\nin the Floquet domain\, information flow i
 n a PT-symmetric system\, and a quantum signature of the exceptional p
 oint in the qubit relaxation state. 
\nI will argue that non-Hermitici
 ty provides a new dimension for exploring quantum systems. 
\n
\n* Wor
 k in collaboration with Dr. Anthony Laing (University of Bristol)\, Pr
 of. Le Luo (Sun Yat-Sen University)\, and Prof. Kater Murch (Washingto
 n U.).
URL:https://www.physics.wisc.edu/events/?id=5013
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