Adaptive versus nonadaptive strategies for quantum channel discrimination
Name
Harrow-2010-Adaptive versus nona.pdf
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169.71 KB
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Author(s)
Harrow, Aram W.
Leung, Debbie W.
Watrous, John
Hassidim, Avinatan
Date Issued
March 2010
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
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.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevA.81.032339
