Local Transformation of Two Einstein-Podolsky-Rosen Photon Pairs into a Three-Photon W State
2009; American Physical Society; Volume: 102; Issue: 13 Linguagem: Inglês
10.1103/physrevlett.102.130502
ISSN1092-0145
AutoresToshiyuki Tashima, T. Wakatsuki, Şahin Kaya Özdemir, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto,
Tópico(s)Quantum optics and atomic interactions
ResumoWe 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.
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