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论文类型： 期刊论文

发表时间： 2010-09-30

发表刊物： PHYSICAL REVIEW A

收录刊物： SCIE、EI、Scopus

卷号： 82

期号： 3

ISSN号： 1050-2947

摘要： A scheme to drive and manipulate a finite-dimensional quantum system in decoherence-free subspaces (DFSs) by Lyapunov control is proposed. Control fields are established by the Lyapunov function. This proposal can drive the open quantum system into DFSs and manipulate it to any desired eigenstate of the free Hamiltonian. An example which consists of a four-level system with three long-lived states driven by two lasers is presented to demonstrate the scheme. We have performed numerical simulations of the dynamics of the four-level system, which show that the scheme works well.