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

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

2008-12-17

arxiv.org/abs/0812.3255v1

Phys.Rev.Lett.102:130502,2009

Physics

Quantum Physics

5 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.102.130502

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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