中国物理B ›› 2007, Vol. 16 ›› Issue (6): 1615-1618.doi: 10.1088/1009-1963/16/6/021
施振刚, 谌雄文, 朱喜香, 宋克慧
Shi Zhen-Gang(施振刚)†, Chen Xiong-Wen(谌雄文), Zhu Xi-Xiang(朱喜香), and Song Ke-Hui(宋克慧)
摘要: This paper proposes a method of generating multipartite entanglement through using d.c. superconducting quantum interference devices (SQUID) inside a standing wave cavity. In this scheme, the d.c. SQUID works in the charge region. It is shown that, a large number of important multipartite entangled states can be generated by a controllable interaction between a cavity field and qubits. It is even possible to produce entangled states involving different cavity modes based on the measurement of charge qubits states. After such superpositions states are created, the interaction can be switched off by the classical magnetic field through the SQUID, and there is no information transfer between the cavity field and the charge qubits.
中图分类号: (Quantum state engineering and measurements)