Entanglement purification for high-dimensional multipartite systems

作     者：Yong Wook Cheong Seung-Woo Lee Jinhyoung Lee Hai-Woong Lee 

作者机构：Quantum Photonic Science Research Center Hanyang University Seoul 133-791 Korea Clarendon Laboratory University of Oxford Parks Road Oxford OX1 3PU United Kingdom BK21 Program Division of Advanced Research and Education in Physics Hanyang University Seoul 133-791 Korea Department of Physics Hanyang University Seoul 133-791 Korea Department of Physics Korea Advanced Institute of Science and Technology Daejeon 305-701 Korea 

出 版 物：《Physical Review A》 (物理学评论A辑：原子、分子和光学物理学)

年 卷 期：2007年第76卷第4期

页      面：042314-042314页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：QUANTUM CRYPTOGRAPHY ERROR-CORRECTION NOISY CHANNELS BELL THEOREM STATES COMMUNICATION TELEPORTATION PROTOCOLS SECURITY 

摘      要：We propose an entanglement purification protocol for high-dimensional multipartite systems. In the protocol we can select a subensemble in a pure generalized Greenberger-Horne-Zeilinger (GHZ) state. This post-selection can be made by detecting the noise which contaminated the initial pure ensemble when the systems passed through a noisy environment. For the detection of noise we investigate the correlation properties of GHZ states and analyze their possible errors due to a noisy environment. We show that the protocol presented is more efficient than a simple generalization of the purification protocol for a bipartite state in high dimensions.