Quantum Communication and Quantum Networking. First International Conference, QuantumComm 2009, Naples, Italy, October 26-30, 2009, Revised Selected Papers

Research Article

Local Transformation of Two EPR Photon Pairs into a Three-Photon W State Using a Polarization Dependent Beamsplitter

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  • @INPROCEEDINGS{10.1007/978-3-642-11731-2_5,
        author={Toshiyuki Tashima and Tetsurho Wakatsuki and Şahin \O{}zdemir and Takashi Yamamoto and Masato Koashi and Nobuyuki Imoto},
        title={Local Transformation of Two EPR Photon Pairs into a Three-Photon W State Using a Polarization Dependent Beamsplitter},
        proceedings={Quantum Communication and Quantum Networking. First International Conference, QuantumComm 2009, Naples, Italy, October 26-30, 2009, Revised Selected Papers},
        proceedings_a={QUANTUMCOMM},
        year={2012},
        month={10},
        keywords={Multipartite entanglement W state LOCC},
        doi={10.1007/978-3-642-11731-2_5}
    }
    
  • Toshiyuki Tashima
    Tetsurho Wakatsuki
    Şahin Özdemir
    Takashi Yamamoto
    Masato Koashi
    Nobuyuki Imoto
    Year: 2012
    Local Transformation of Two EPR Photon Pairs into a Three-Photon W State Using a Polarization Dependent Beamsplitter
    QUANTUMCOMM
    Springer
    DOI: 10.1007/978-3-642-11731-2_5
Toshiyuki Tashima1,*, Tetsurho Wakatsuki1, Şahin Özdemir,*, Takashi Yamamoto1, Masato Koashi1, Nobuyuki Imoto1
  • 1: Osaka University
*Contact email: tashima@qi.mp.es.osaka-u.ac.jp, ozdemir@ese.wustl.edu

Abstract

We have theoretically proposed and experimentally demonstrated that two EPR photon pairs can be transformed into a three-photon W state by local operation and classical communication (LOCC). The fidelity of the final state to the ideal W state was 0.778±0.043. The obtained expectation value of the witness operator for distinguishing between the three-photon W state and bi-separable states was − 0.111±0.043.