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The disentangling power of unitaries

Clarisse, L., Ghosh, S., Severini, S. and Sudbery, A. (2007) The disentangling power of unitaries. Physics Letters A. pp. 400-402. ISSN 0375-9601

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We define the disentangling power of a unitary operator in a similar way as the entangling power defined by Zanardi et al. [P. Zanardi, C. Zalka, L. Faoro, Phys. Rev. A 62 (2000) 030301(R), quant-ph/0005031]. A general formula is derived and it is shown that both quantities are directly proportional. All results concerning the entangling power can simply be translated into similar statements for the disentangling power. In particular, the disentangling power is maximal for certain permutations derived from orthogonal Latin squares. These permutations can therefore be interpreted as those that distort entanglement in a maximal way.

Item Type: Article
Copyright, Publisher and Additional Information: Copyright © 2007 Elsevier B.V. This is an author produced version of an article published in Physics Letters A.
Institution: The University of York
Academic Units: The University of York > Mathematics (York)
Depositing User: Sherpa Assistant
Date Deposited: 28 Sep 2007 08:52
Last Modified: 24 Apr 2016 00:44
Published Version: http://dx.doi.org/10.1016/j.physleta.2007.02.001
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/3362

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