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Bounds for Entanglement via an Extension of Strong Subadditivity of Entropy
Journal article   Open access  Peer reviewed

Bounds for Entanglement via an Extension of Strong Subadditivity of Entropy

Eric A Carlen and Elliott H Lieb
Letters in mathematical physics, Vol.101(1), pp.1-11
07/01/2012
DOI: https://doi.org/10.1007/s11005-012-0565-6

Abstract

Physical Sciences Physics Physics, Mathematical Science & Technology
Let rho (12) be a bipartite density matrix. We prove lower bounds for the entanglement of formation E-f(rho (12)) and the squashed entanglement E-sq(rho (12)) in terms of the conditional entropy S (12) - S (1) and prove that these bounds are sharp by constructing a new class of states whose entanglements can be computed, and for which the bounds are saturated.
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https://doi.org/10.1007/s11005-012-0565-6View
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