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Information-theoretic aspects of quantum inseparability of mixed states

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arxiv quant-ph/9607007 v1 pith:H4BLW4EU submitted 1996-07-08 quant-ph

Information-theoretic aspects of quantum inseparability of mixed states

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keywords inseparabilitymixedstatesalphaaspectsentropyinformation-theoreticquantum
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Information-theoretic aspects of quantum inseparability of mixed states are investigated in terms of the $\alpha$-entropy inequalities and teleportation fidelity. Inseparability of mixed states is defined and a complete characterization of the inseparable $2\times2$ systems with maximally disordered subsystems is presented within the Hilbert-Schmidt space formalism. A connection between teleportation and negative conditional $\alpha$-entropy is also emphasized.

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