0701149v3

related topics
{entanglement, phys, rev}
{information, entropy, channel}
{state, states, entangled}
{measurement, state, measurements}
{key, protocol, security}

Conditional Entanglement

Dong Yang, Michal Horodecki, Z. D. Wang

abstract: Based on the ideas of {\it quantum extension} and {\it quantum conditioning}, we propose a generic approach to construct a new kind of entanglement measures called {\it conditional entanglement}. The new measures, built from the known entanglement measures, are convex, automatically {\it super-additive}, and even smaller than the regularized versions of the generating measures. More importantly, new measures can also be built directly from measures of correlations, enabling us to introduce an {\it additive} measure and generalize it to a multipartite entanglement measure.

oai_identifier:
oai:arXiv.org:quant-ph/0701149
categories:
quant-ph
comments:
New version, a short one submitted
arxiv_id:
quant-ph/0701149
created:
2007-01-21
updated:
2007-08-01

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