Revisiting the Dolinar Receiver through Multiple-Copy State Discrimination Theory

Details Revisiting the Dolinar Receiver through Multiple-Copy State Discrimination Theory Revisiting the Dolinar Receiver through Multiple-Copy State Discrimination Theory

2011-07-27

arxiv.org/abs/1107.5452v2

Physics

Quantum Physics

6 pages, 3 figures

Scientific paper

We consider the problem of discriminating between two quantum coherent states by interpreting a single state like being a collection of several successive copies of weaker coherent states. By means of recent results on multiple-copy state discrimination, it is possible to give a reinterpretation of the Dolinar receiver, and carry out a quite straightforward analysis of its behavior. We also propose and investigate a suboptimal detection scheme derived from the Dolinar's architecture, which is shown to slightly outperform some other near-optimal schemes available in literature.

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