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Title: Adaptive versus nonadaptive strategies for quantum channel discrimination

Journal Article · · Physical Review. A
; ; ;  [1]
  1. Department of Mathematics, University of Bristol, Bristol (United Kingdom)

We provide a simple example that illustrates the advantage of adaptive over nonadaptive strategies for quantum channel discrimination. In particular, we give a pair of entanglement-breaking channels that can be perfectly discriminated by means of an adaptive strategy that requires just two channel evaluations, but for which no nonadaptive strategy can give a perfect discrimination using any finite number of channel evaluations.

OSTI ID:
21413299
Journal Information:
Physical Review. A, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevA.81.032339; (c) 2010 The American Physical Society; ISSN 1050-2947
Country of Publication:
United States
Language:
English

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