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Transitional behavior of quantum Gaussian memory channels

Journal Article · · Physical Review. A
 [1];  [1];  [2]
  1. School of Science and Technology, University of Camerino, I-62032 Camerino (Italy)
  2. Italy
We address the question of optimality of entangled input states in quantum Gaussian memory channels. For a class of such channels, which can be traced back to the memoryless setting, we state a criterion which relates the optimality of entangled inputs to the symmetry properties of the channels' action. Several examples of channel models belonging to this class are discussed.
OSTI ID:
21413367
Journal Information:
Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English

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