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arxiv: 0903.3875 · v1 · pith:VJCVCGKAnew · submitted 2009-03-23 · ❄️ cond-mat.stat-mech · quant-ph

Statistical quantum operation

classification ❄️ cond-mat.stat-mech quant-ph
keywords discussedoperationstatestatisticalthermalizationallowsarbitrarybipartite
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A generic unital positive operator-valued measure (POVM), which transforms a given stationary pure state to an arbitrary statistical state with perfect decoherence, is presented. This allows one to operationally realize thermalization as a special case. The loss of information due to randomness generated by the operation is discussed by evaluating the entropy. Thermalization of the bipartite spin-1/2 system is discussed as an illustrative example.

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