Information-theoretic aspects of quantum inseparability of mixed states
arXiv:quant-ph/9607007 · doi:10.1103/PhysRevA.54.1838
Abstract
Information-theoretic aspects of quantum inseparability of mixed states are investigated in terms of the $α$-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 $α$-entropy is also emphasized.
Revtex, 19 pages, to appear in Phys. Rev. A, vol. 54; one postscript figure available at request from fizrh@univ.gda.pl