摘要
We investigate the entanglement dynamics of a quantum system consisting of three superconducting charge qubits （SCQs） interacting with a microwave field. For separable and entangled states of the SCQs, the evolutions are studied under various photon numbers of cavity field. The results show that the amplitude and period of the bipartite entanglement square concurrences can be controlled by the choice of initial states of SCQs and photon number of cavity field, respectively. This simple model of a quantum register allows us to understand the dynamic process of the quantum storage of information carried by charge qubit.
基金
Supported by State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics of Chinese Academy of Sciences under Grant No.T152908
Hunan Provincial Natural Science Foundation of China under Grant No.10JJ6010
the Key Project Foundation of Hunan Provincial Education Department,China under Grant No.10A095
Science Research Foundation of Jishou University of China under Grant No.10JDY034
