BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1805
DTSTART:20100429T150000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T191738Z
LAST-MODIFIED:20100415T221304Z
LOCATION:5310 Chamberlin
SUMMARY:Can the Moon affect entanglement transfer?\, R. G. Herb Conden
 sed Matter Seminar\, Joseph H. Eberly\, University of Rochester
DESCRIPTION:Surprises have emerged from studies of entanglement evolut
 ion in quantum theory\, and counter-intuitive predictions [1] have bee
 n confirmed in experiment [2].  It is implicit in most analyses of ent
 anglement evolution that the observer is all-powerful and able to dete
 rmine a system state completely\, but this is usually not true. One re
 ason is that all aspects of a party's quantum state typically cannot b
 e identified. Unknown and non-interacting external parties are typical
 ly not mentioned\, excluded from view even if entangled with the syste
 m of interest. We will refer to this always-present but hidden and non
 -interacting background universe as the "Moon"\, and will present a sa
 mple sketch showing the effect of this Moon on entanglement evolution.
 <br>
\n<br>
\n[1] See the review: T. Yu and J.H. Eberly\, Science 323\
 , 598 (2009).<br>
\n<br>
\n[2] M. P. Almeida\, F. de Melo\, M. Hor-Mey
 ll\, A. Salles\, S.P. Walborn\, P.H. Souto-Ribeiro and L. Davidovich\,
  Science 316\, 579 (2007).
URL:https://www.physics.wisc.edu/events/?id=1805
END:VEVENT
END:VCALENDAR