Purification of Single-photon Entanglement

Details Purification of Single-photon Entanglement Purification of Single-photon Entanglement

2010-01-25

arxiv.org/abs/1001.4449v1

PRL 104, 180504 (2010)

Physics

Quantum Physics

Main article: 5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.104.180504

Single-photon entanglement is a simple form of entanglement that exists between two spatial modes sharing a single photon. Despite its elementary form, it provides a resource as useful as polarization-entangled photons and it can be used for quantum teleportation and entanglement swapping operations. Here, we report the first experiment where single-photon entanglement is purified with a simple linear-optics based protocol. Besides its conceptual interest, this result might find applications in long distance quantum communication based on quantum repeaters.

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