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arXiv:quant-ph/9703043 · Physical Review Letters

Nonorthogonal Quantum States Maximize Classical Information Capacity

Christopher A. Fuchs

Published Aug 11, 1997• 102 citations
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Abstract

I demonstrate that, rather unexpectedly, there exist noisy quantum channels for which the optimal classical information transmission rate is achieved only by signaling alphabets consisting of nonorthogonal quantum states.
DOI
10.1103/physrevlett.79.1162

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