Conditional quantum entropy: Difference between revisions

Revision as of 19:14, 20 August 2004

Revision as of 00:36, 24 August 2004

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By analogy with the classical conditional entropy, we define the conditional quantum entropy as <math>S(\rho|\sigma) \equiv S(\rho,\sigma) - S(\sigma)</math>.

==Properties==

Unlike the classical [[conditional entropy]], the conditional quantum entropy can be negative.

==References==