非破坏测量的多粒子纠缠纯化方案(英文)  

The purification scheme of multiphoton entanglement state based on quantum nondemolition( QND) measurement

作　　者：严飞[1] 黄凤[1] 

机构地区：[1]安徽建筑大学数理系,安徽合肥230601

出　　处：《安徽大学学报（自然科学版）》2014年第4期45-51,共7页Journal of Anhui University(Natural Science Edition)

基　　金：Supported by National Natural Science Foundation of China(10704001,61073048,10905024,11005029);the Key Project of Chinese Ministry of Education(210092);the China Postdoctoral Science Foundation(20110490825);the Key Program of the Education Department of Anhui Province(KJ2012A020,KJ2010A287,KJ2014A046,2010SQRL153ZD);the Doctoral Research Foundation of Anhui Jianzhu University(K02630);the"211 Project"of Anhui University(33190019);the Personnel Department of Anhui Province;Anhui Key Laboratory of Information Materials and Devices(Anhui University)

摘　　要：提出了一种基于非破坏测量的多粒子纠缠混合态纯化方案.由于W态是该混合纠缠态的基本组成元素,所以称之为混合W纠缠态.利用交叉克尔非线性介质的宇称检测功能和光子计数功能,实现了无须联合Bell态测量和复杂的单光子探测技术的混合W态纠缠纯化方案,从而降低了纠缠纯化的复杂性,有利于实现纠缠纯化过程.Based on quantum nondemolition （QND） measurements of photon numbers, a muhiphoton polarization entanglement purification scheme was proposed in this paper. Because the W state was the basis vector of the new mixed tripartite entangled state, we called it the mixed W state. Here, the QND detectors acted not only as the CNOT operations but as single photon number detectors. It would greatly reduce the complexity of the realization of the purification scheme. All these merits suggested that the purification scheme for the mixed W states could be realized with the current technology.

关 键 词：量子非破坏测量 混合W态 交叉克尔非线性效应 量子纯化 

分 类 号：O413[理学—理论物理]