Adaptive versus nonadaptive strategies for quantum channel discrimination

Author(s)
Harrow, Aram W.; Leung, Debbie W.; Watrous, John; Hassidim, Avinatan
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Abstract
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.
Date issued
2010-03
URI
http://hdl.handle.net/1721.1/58608
Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Journal
Physical Review A
Publisher
American Physical Society
Citation
Harrow, Aram W. et al. “Adaptive versus nonadaptive strategies for quantum channel discrimination.” Physical Review A 81.3 (2010): 032339. © 2010 The American Physical Society
Version: Final published version
ISSN
1050-2947
1094-1622
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