On Mutual Information in Multipartite Quantum States and Equality in Strong Subadditivity of Entropy

Details On Mutual Information in Multipartite Quantum States and Equality in Strong Subadditivity of Entropy On Mutual Information in Multipartite Quantum States and Equality in Strong Subadditivity of Entropy

2003-11-27

arxiv.org/abs/quant-ph/0311193v1

J. Phys. A: Math. Gen. 37 (2004) 3535-3542

Physics

Quantum Physics

8 pages; Latex2e and Revtex4

Scientific paper

10.1088/0305-4470/37/10/016

The challenge of equality in the strong subadditivity inequality of entropy
is approached via a general additivity of correlation information in terms of
nonoverlapping clusters of subsystems in multipartite states (density
operators). A family of tripartite states satisfying equality is derived.

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