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SUMMARY:An informational derivation of Quantum Theory - Giulio Chiribella 
 (Perimeter Institute)
DTSTART:20110120T141500Z
DTEND:20110120T151500Z
UID:TALK28408@talks.cam.ac.uk
CONTACT:Ashley Montanaro
DESCRIPTION:In this talk I will present a set of informational principles 
 that completely identify finite-dimensional quantum theory on complex Hilb
 ert spaces. Five elementary axioms — causality\, perfect distinguishabil
 ity\, ideal compression\, local distinguishability\, and pure conditioning
  — define a broad class of theories of information-processing that can b
 e regarded as standard. One postulate — purification — singles out qua
 ntum theory uniquely within this class. The main structures of quantum the
 ory\, such as the representation of mixed states as convex combinations of
  perfectly distinguishable pure states\, are derived directly from the pri
 nciples without resorting to the Hilbert space framework.\n\nThis work has
  been done in collaboration with M. D'Ariano and P. Perinotti and is avail
 able at http://arxiv.org/pdf/1011.6451
LOCATION:MR13\, Centre for Mathematical Sciences
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