Physics – Quantum Physics
Scientific paper
2004-07-15
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.
Chen Jing-Ling
Kwek Leong Chuan
Ma Liangping
Oh Chang-Heon
Tong Dian-Min
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