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SUMMARY:Estimating multipartite entanglement with few local measurements -
  Marcus Huber (University of Bristol)
DTSTART:20121018T131500Z
DTEND:20121018T141500Z
UID:TALK39930@talks.cam.ac.uk
CONTACT:Paul Skrzypczyk
DESCRIPTION:Many tasks in quantum information require the preparation of m
 ultipartite entangled states. The number of local measurements one needs t
 o determine complete information about a quantum system grows exponentiall
 y with the number of particles. Thus in all practical scenarios one is fac
 ed with the challenge of revealing as many desirable properties of a state
  as needed with as few local measurements as possible. We show that using 
 a framework of nonlinear entanglement witnesses one can lower bound measur
 es of genuine multipartite entanglement in an optimal way and furthermore 
 reveal the structure of genuinely multidimensional features of multipartit
 e quantum systems.
LOCATION:MR4\, Centre for Mathematical Sciences
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