A Concentration/Purification Scheme for Two Partially Entangled Photon Pairs

Details A Concentration/Purification Scheme for Two Partially Entangled Photon Pairs A Concentration/Purification Scheme for Two Partially Entangled Photon Pairs

2001-01-10

arxiv.org/abs/quant-ph/0101042v1

Phys. Rev. A64, 012304 (2001)

Physics

Quantum Physics

8 pages, 3 figures

Scientific paper

10.1103/PhysRevA.64.012304

An experimental scheme for concentrating entanglement in partially entangled photon pairs is proposed. In this scheme, two separated parties obtain one maximally entangled photon pair from previously shared two partially entangled photon pairs by local operations and classical communication. A practical realization of the proposed scheme is discussed, which uses imperfect photon detectors and spontaneous parametric down-conversion as a photon source. This scheme also works for purifying a class of mixed states.

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