作　　者： ; ; ; ;

机构地区： 佛山科学技术学院理学院光电子与物理学系

出　　处： 《量子电子学报》 2006年第4期489-493,共5页

摘　　要： 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.

关 键 词： 量子光学 非局域态交换 纠缠态 操纵

领　　域： [机械工程] [理学] [理学]