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Article overview
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Conditional Entanglement | | Dong Yang
; Michal Horodecki
; Z. D. Wang
; | | Date: |
21 Jan 2007 | | 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, interestingly super-additive, and less than the generating measure. More importantly, new measures can also be built directly from correlation functions, enabling us to introduce an appropriate measure $E_I$--conditional entanglement of quantum mutual information. Significantly and arrestingly, $E_I$ is {it additive} and can be generalized to multipartite entanglement. Moreover, it is shown that the squashed entanglement originates actually from asymmetric conditioning on quantum mutual information. | | Source: | arXiv, quant-ph/0701149 | | Services: | Forum | Review | PDF | Favorites | |
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