Entanglement enhanced distinguishability of coherence-breaking channels
2019 ◽
Vol 17
(04)
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pp. 1950036
Keyword(s):
Originating from the superposition principle in quantum mechanics, coherence has been extensively studied as a kind of important resource in quantum information processing. We investigate the distinguishability of coherence-breaking channels with the help of quantum entanglement. By explicitly computing the minimal error probability of channel discrimination, it is shown that entanglement can enhance the capacity of coherence-breaking channel distinguishability with same types for some cases while it cannot be enhanced for some other cases. For coherence-breaking channels with different types, the channel distinguishability cannot be enhanced via entanglement.
2016 ◽
Vol 14
(06)
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pp. 1640024
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2005 ◽
Vol 03
(01)
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pp. 31-39
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2018 ◽
Vol 16
(01)
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pp. 1850009
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2004 ◽
Vol 213
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pp. 237-244
2013 ◽
Vol 11
(08)
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pp. 1330002
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2010 ◽
Vol 08
(01n02)
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pp. 259-269
2003 ◽
Vol 01
(02)
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pp. 259-267
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2018 ◽
Vol 16
(02)
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pp. 1850014