Distinguishing the elements of a full product basis set needs only projective measurements and classical communication
- 10 August 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 70 (2), 022306
- https://doi.org/10.1103/physreva.70.022306
Abstract
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.Keywords
Other Versions
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