Purification of single-photon entanglement.
- Salart D Group of Applied Physics, University of Geneva, 20, Rue de l'Ecole de Médecine, CH-1211 Geneva 4, Switzerland.
- Landry O
- Sangouard N
- Gisin N
- Herrmann H
- Sanguinetti B
- Simon C
- Sohler W
- Thew RT
- Thomas A
- Zbinden H
- 2010-05-21
Published in:
- Physical review letters. - 2010
English
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. In addition to its conceptual interest, this result might find applications in long distance quantum communication based on quantum repeaters.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.104.180504
- PMID 20482160
- Persistent URL
- https://sonar.ch/global/documents/221261
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