中国物理B ›› 2008, Vol. 17 ›› Issue (1): 185-189.doi: 10.1088/1674-1056/17/1/032
吴少平, 张丽娟, 李高翔
Wu Shao-Ping(吴少平), Zhang Li-Juan(张丽娟), and Li Gao-Xiang(李高翔)
摘要: Considering a system in which a single photon and a coherent field propagate through a Kerr medium, when the weak cross-Kerr interaction between the coherent state and the single photon under decoherence is involved, this paper derives analytically a macroscopic superposition state by the superoperator method and investigates the influences of decoherence on the coherence properties of the obtained state. It finds that the macroscopic superposition state will experience evolution from a pure superposition state to a mixed state in a dissipative environment and the Kerr effect makes the field display a periodic revival from decoherence for a short time.
中图分类号: (Phase conjugation; photorefractive and Kerr effects)