Statistical quantum operation
Statistical Mechanics
2011-09-09 v1 Quantum Physics
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.
Cite
@article{arxiv.0903.3875,
title = {Statistical quantum operation},
author = {Sumiyoshi Abe and Yuichi Itto and Mamoru Matsunaga},
journal= {arXiv preprint arXiv:0903.3875},
year = {2011}
}
Comments
10 pages, no figures