中国物理B ›› 2009, Vol. 18 ›› Issue (8): 3210-3214.doi: 10.1088/1674-1056/18/8/019
张小平1, 任中洲1, 郑强2, 支启军3
Zheng Qiang(郑强)a)c)†, Zhang Xiao-Ping(张小平)a), Zhi Qi-Jun(支启军)b), and Ren Zhong-Zhou(任中洲)a)
摘要: This paper investigates the entanglement dynamics of the system, composed of two qubits A and B with Heisenberg XX spin interactation. There is a third controller qubit C, which only has Dzyaloshinskii--Moriya (DM) spin-orbit interaction with the qubit B. It is found that depending on the initial state of the controller qubit C and DM interaction, the entanglement of the system displays amplification and sudden birth effects. These effects indicate that one can control the entanglement of the system, which may be helpful for quantum information processing.
中图分类号: (Entanglement and quantum nonlocality)