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Entanglement can enhance the distinguishability of entanglement-breaking channels

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arxiv quant-ph/0505174 v1 pith:4ZOE2O4K submitted 2005-05-24 quant-ph

Massimiliano F. Sacchi This is my paper · ORCID
classification quant-ph
keywords channelsdistinguishabilityenhanceentanglement-breakingcounterintuitiveentangledentanglementinput
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We show the rather counterintuitive result that entangled input states can strictly enhance the distinguishability of two entanglement-breaking channels.

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  1. Entanglement in quantum channel discrimination: sometimes less is more

    quant-ph 2026-05 unverdicted novelty 7.0 of 10

    The paper shows that for some pairs of unitary channels, perfect discrimination is possible with separable states but nearly impossible with maximally entangled states, introducing MEWC and MEBC concepts.

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