Condition for unambiguous state discrimination using local operations and classical communication

Journal Article · Sat May 01 04:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.050307· OSTI ID:20641083

Chefles, Anthony ^[1]

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1. Department of Physics, Astronomy and Mathematics, University of Hertfordshire, Hatfield AL10 9AB, Hertfordshire (United Kingdom)

We obtain a necessary and sufficient condition for a finite set of states of a finite-dimensional multiparticle quantum system to be amenable to unambiguous discrimination using local operations and classical communication. This condition is valid for states which may be mixed, entangled, or both. When the support of the set of states is the entire multiparticle Hilbert space, this condition is found to have an intriguing connection with the theory of entanglement witnesses.

• OSTI ID: 20641083
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 69; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

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