Local Transformation of Two Einstein-Podolsky-Rosen Photon Pairs into a Three-Photon W State

作     者：Toshiyuki Tashima Tetsuroh Wakatsuki Şahin Kaya Özdemir Takashi Yamamoto Masato Koashi Nobuyuki Imoto 

作者机构：Graduate School of Engineering Science Osaka University Toyonaka Osaka 560-8531 Japan CREST Photonic Quantum Information Project 4-1-8 Honmachi Kawaguchi Saitama 331-0012 Japan Department of Electrical and Systems Engineering Washington University in St. Louis St. Louis Missouri 63130 USA 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2009年第102卷第13期

页      面：130502-130502页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：JSPS MEXT Global COE Program and Young scientists Grants-in-Aid for Scientific Research [20540389, 20740232] Funding Source: KAKEN 

主　　题：Photons 

摘      要：We propose and experimentally demonstrate a transformation of two Einstein-Podolsky-Rosen photon pairs distributed among three parties into a three-photon W state using local operations and classical communication. We then characterize the final state using quantum state tomography on the three-photon state and on its marginal bipartite states. The fidelity of the final state to the ideal W state is 0.778±0.043 and the expectation value for its witness operator is −0.111±0.043 implying the success of the proposed local transformation.