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arXiv · 0903.3875

Statistical quantum operation

Sumiyoshi Abe·Yuichi Itto·Mamoru Matsunaga
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Abstract

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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Sumiyoshi Abe, Yuichi Itto, Mamoru Matsunaga. 2009-03-23. Statistical quantum operation. https://doi.org/10.1142/s0217984910024407

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