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SUMMARY:A reversible theory of entanglement and its relation to the second
  law - Fernando Guadalupe Brandao
DTSTART:20080220T160000Z
DTEND:20080220T170000Z
UID:TALK10904@talks.cam.ac.uk
CONTACT:Berry Groisman
DESCRIPTION:Entanglement is central both to the foundations of quantum the
 ory and\, as a novel resource\, to quantum information science. The theory
  of entanglement establishes basic laws\, such as the non-increase of enta
 nglement under local operations\, that govern its manipulation and aims to
  draw from them formal \nanalogies to thermodynamics and the second law. H
 owever\, while in the second law the entropy uniquely determines whether a
  state is adiabatically accessible from another\, the manipulation of enta
 nglement under local operations exhibits a fundamental irreversibility whi
 ch prevents the existence of such an order. In this talk it will be shown 
 that a reversible theory of entanglement and a \nrigorous relationship wit
 h thermodynamics may be established when one considers all non-entangling 
 transformations. The role of entropy and the second law is taken by the as
 ymptotic relative entropy of entanglement and the basic law of entanglemen
 t. \nThe usefulness of this new approach to general resource theories and 
 to quantum information theory will be discussed. The talk is based on a jo
 int work with Martin Plenio. \n\n
LOCATION:Centre for Mathematical Sciences\, Wilberforce Road\, Lecture roo
 m MR14 (Pavilion F)
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