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SUMMARY:Quantum Shannon Theory: Rothschild Distinguished Visiting Fellow L
 ecture - Holevo\, A (Russian Academy of Sciences )
DTSTART:20131014T160000Z
DTEND:20131014T170000Z
UID:TALK48087@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:The notions of channel and capacity are central to the classic
 al Shannon theory. "Quantum Shannon theory" denotes a subfield of quantum 
 information science which uses operator analysis\, convexity and matrix in
 equalities\, asymptotic techniques such as large deviations and measure co
 ncentration to study mathematical models of communication channels and the
 ir information-processing performance. From the mathematical point of view
  quantum channels are normalized completely positive maps of operator alge
 bras\, the analog of Markov maps in the noncommutative probability theory\
 , while the capacities are related to certain norm-like quantities. In app
 lications noisy quantum channels arise from irreversible evolutions of ope
 n quantum systems interacting with environment-a physical counterpart of a
  mathematical dilation theorem. \n
LOCATION:Seminar Room 1\, Newton Institute
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