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arXiv · 0812.3255

Local transformation of two EPR photon pairs into a three-photon W state

Toshiyuki Tashima·Tetsuroh Wakatsuki·Sahin Kaya Ozdemir·Takashi Yamamoto·Masato Koashi·Nobuyuki Imoto
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Abstract

We propose and experimentally demonstrate a transformation of two EPR 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 $0.778\pm 0.043$ and the expectation value for its witness operator is $-0.111\pm 0.043$ implying the success of the proposed local transformation.

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Toshiyuki Tashima, Tetsuroh Wakatsuki, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto. 2008-12-17. Local transformation of two EPR photon pairs into a three-photon W state. https://doi.org/10.1103/physrevlett.102.130502

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