Operator-sum representation of time-dependent density operators and its applications

Details Operator-sum representation of time-dependent density operators and its applications Operator-sum representation of time-dependent density operators and its applications

2004-07-15

arxiv.org/abs/quant-ph/0407111v1

Physical Review A 69, 054102 (2004)

Physics

Quantum Physics

4 pages, no figure, brief report

Scientific paper

10.1103/PhysRevA.69.054102

We show that any arbitrary time-dependent density operator of an open system can always be described in terms of an operator-sum representation regardless of its initial condition and the path of its evolution in the state space, and we provide a general expression of Kraus operators for arbitrary time-dependent density operator of an $N$-dimensional system. Moreover, applications of our result are illustrated through several examples.

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