用三粒子纠缠态和Bell态作量子信道实现非局域的态交换

量子电子学报 , 2006, 23(4): 489-493. doi: 10.3969/j.issn.1007-5461.2006.04.011

用三粒子纠缠态和Bell态作量子信道实现非局域的态交换

陈立冰 ^1, , 刘玉华 ^2, , 白宜红 ^3, , 路洪 ^4,

1.佛山科学技术学院光电子与物理系,广东,佛山,528000

2.佛山科学技术学院光电子与物理系,广东,佛山,528000

3.佛山科学技术学院光电子与物理系,广东,佛山,528000

4.佛山科学技术学院光电子与物理系,广东,佛山,528000

基金项目: the Natural Science Foundation of Guangdong Province, China(020127) 国家自然科学基金(Z02069)

关键词：量子光学 , 非局域态交换 , 纠缠态 , 操纵

Implementing a non-local SWAP operation on two entangled pairs by a three-qubit entangled state and a Bell state

Keywords： quantum optics , non-local SWAP operation , entanglement state , implementation

提出一种用三粒子纠缠态和Bell态作量子信道对处于异地的两纠缠粒子对实现非局域的态交换的理论方案.该方案的特点是,两地之间还存在一位第三者,她作为监控人参与量子非局域操纵过程.特别地,当量子信道为部分纠缠态时,此人可矫正被非理想量子信道致畸的量子态.

We propose a theoretical scheme for the implementation of a non-local quantum SWAP operation on two spatially separated entangled pairs by a three-qubit entangled state and a Bell state, and we show that the operation can swap two qubits of these entangled pairs. The feature of the scheme is that a third side is included, who may participate the process of quantum non-local implementation as a supervisor. Furthermore, when the quantum channel is partially entangled,the third one can rectify the state distorted by imperfect quantum channel.

参考文献

[1]	Gottesman D,ChuangI L.Demonstrating the viability of universal quantum computation using teleportation and single-qubit operation[J].Nature,1999,(402):390-393.
[2]	Dür W,Cirac J I.Nonlocal operations:purification,storage,compression,tomography,and probabilistic implementation[J].Phys.Rev.A,2001,(64):012317.
[3]	Huang Y F,Ren X F,Zhang Y S,et al.Experimental teleportation of quantum Controlled-NOT gate[J].Phys.Rev.Lett.,2004,(93):240501.
[4]	Chen L B,Lu H,Chen W C.Remote interactions on distributed quantum systems:non-local conditional operations and production of multiparticle entangled state[J].Int.J.of Modern Phys.B,2005,(19):3261-3271.
[5]	Nielsen M A,Chuang I L.Quantum Computation and Quantum Information[M].Cambridge:Cambridge University Press,2000.
[6]	Zheng Y Z,Gu Y J,et al.Implementation of nonlocal quantum swap operation on two entangled pairs[J].Chin.Phys.,2002,(11):529-531.
[7]	Sousa R,Hu X D,Sarma S.Effect of an inhomogeneous external magnetic field on a quantum-dot quantum computer[J].Phys.Rev.A,2001,(64):042307.
[8]	Dur W,Vidal G,Cirac J I.Three qubits can be entangled in two inequivalent ways[J].Phys.Rev.A,2000,(62):062314.
[9]	Zhang C W,Li C F,Wang Z Y,et al.Probabilistic quantum cloning via Greenberger-Horne-Zeilinger states[J].Phys.Rev.A,2000,(62):042302.
[10]	Karlsson A,Bourennane M.Quantum teleportation using three-particle entanglement[J].Phys.Rev.A,1998,(58):4394-4400.
[11]	Hao J C,Li C F,Guo G C.Controlled dense coding using the Grenberger-Horne-Zeilinger state[J].Phys.Rev.A,2001,(63):054301.
[12]	Boumeester D,Pan J W,et al.Observation of three-photon greenberger-horne-zeilinger entanglement[J].Phys.Rev.Lett.,1999,(82):1345-1349.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网