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  4. 基于弱Kerr非线性相互作用的近乎确定性可控量子隐形传态

量子电子学报 , 2011, 28(3): 350-356. doi: 10.3969/j.issn.1007-5461.2011.03.017

基于弱Kerr非线性相互作用的近乎确定性可控量子隐形传态

周建 1, , 杨名 2,

1.安徽新华学院,安徽,合肥,230088

2.安徽大学物理与材料科学学院,安徽,合肥,230039

基金项目:   This work is supported by National Natural Science Foundation of China(10704001;61073048)   the Key Program of the Education Department of Anhui Province(KJ2009B179Z;2009SQRZ196;KJ2008A28ZC;KJ2009A048Z;2010SQRL153ZD;;KJ2010A287)   the Key Project of Chinese Ministry of Education(210092)  

关键词： 量子光学 , 可控量子隐形传态 , cross-Kerr非线性相互作用 , 近似确定性的

Nearly deterministic controlled teleportation for photonic qubit via weak cross-Kerr nonlinearity

Keywords： quantum optics , controlled teleportation , cross-Kerr nonlinearity , nearly determinacy

基于cross-Kerr非线性相互作用,提出了一种近似确定性的可控量子隐形传态方案.利用量子非破坏性测量技术较容易地实现了复杂的控制非操作和贝尔态分析过程,这使得此方案比以往使用投影测量的隐形传态方案效率更高,进一步分析表明方案在现有的实验条件下是切实可行的.

A scheme for teleporting an unknown single-qubit photonic state in a nearly deterministic and controlled manner is proposed via the weak cross-Kerr nonlinearities. The functions of the complicated CNOT operations and Bell-state analysis can be realized easily with the help of quantum nondemolition measurement technique. This improvement makes the present scheme more efficient than the schemes using nonunitary projective measurements. Discussions about this scheme show that it is feasible with the current experimental technology in optics.

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