Distinguishing the elements of a full product basis set needs only projective measurements and classical communication

Journal Article · Sun Aug 01 04:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.022306· OSTI ID:20645851

Pingxing, Chen ^[1]; Chengzu, Li ^[2]

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1. Laboratory of Quantum Communication and Quantum Computation, University of Science and Technology of China, Hefei, 230026 (China)
2. Department of Applied Physics, National University of Defense Technology, Changsha, 410073 (China)

Nonlocality without entanglement is an interesting field. A manifestation of quantum nonlocality without entanglement is the possible local indistinguishability of orthogonal product states. In this paper we analyze the character of operators to distinguish the elements of a full product basis set in a multipartite system, and show that distinguishing perfectly these product bases needs only local projective measurements and classical communication, and these measurements cannot damage each product basis. Employing these conclusions one can discuss local distinguishability of the elements of any full product basis set easily. Finally we discuss the generalization of these results to the locally distinguishability of the elements of incomplete product basis set.

• OSTI ID: 20645851
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 70; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

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COMMUNICATIONS
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QUANTUM MECHANICS
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