中国物理B ›› 2010, Vol. 19 ›› Issue (10): 100313-100313.doi: 10.1088/1674-1056/19/10/100313
张登玉, 唐世清, 谢利军, 詹孝贵, 陈银花, 高峰
收稿日期:
2010-02-01
修回日期:
2010-03-17
出版日期:
2010-10-15
发布日期:
2010-10-15
基金资助:
Zhang Deng-Yu(张登玉)† , Tang Shi-Qing(唐世清)‡, Xie Li-Jun(谢利军), Zhan Xiao-Gui(詹孝贵), Chen Yin-Hua(陈银花), and Gao Feng(高峰)
Received:
2010-02-01
Revised:
2010-03-17
Online:
2010-10-15
Published:
2010-10-15
Supported by:
摘要: We propose simple schemes for generating W-type multipartite entangled states in cavity quantum electrodynamics (CQED). Our schemes involve a largely detuned interaction of Λ-type three-level atoms with a single-mode cavity field and a classical laser, and both the symmetric and asymmetric W states can be created in a single step. Our schemes are insensitive to both the cavity decay and atomic spontaneous emission. With the above system, we also propose a scheme for realizing quantum-information concentration which is the reverse process of quantum cloning. In this scheme, quantum-information originally coming from a single qubit, but now distributed into many qubits, is concentrated back to a single qubit in only one step.
中图分类号: (Entanglement and quantum nonlocality)
张登玉, 唐世清, 谢利军, 詹孝贵, 陈银花, 高峰. Simple schemes for generation of W-type multipartite entangled states and realization of quantum- information concentration[J]. 中国物理B, 2010, 19(10): 100313-100313.
Zhang Deng-Yu(张登玉), Tang Shi-Qing(唐世清), Xie Li-Jun(谢利军), Zhan Xiao-Gui(詹孝贵), Chen Yin-Hua(陈银花), and Gao Feng(高峰). Simple schemes for generation of W-type multipartite entangled states and realization of quantum- information concentration[J]. Chin. Phys. B, 2010, 19(10): 100313-100313.
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