Photonic crystal fibre source of photon pairs for quantum information processing

Details Photonic crystal fibre source of photon pairs for quantum information processing Photonic crystal fibre source of photon pairs for quantum information processing

2006-11-22

arxiv.org/abs/quant-ph/0611232v1

Phys. Rev. Lett. 99, 120501 (2007)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.99.120501

We demonstrate two key components for optical quantum information processing: a bright source of heralded single photons; and a bright source of entangled photon pairs. A pair of pump photons produces a correlated pair of photons at widely spaced wavelengths (583 nm and 900 nm), via a $\chi^{(3)}$ four-wave mixing process. We demonstrate a non-classical interference between heralded photons from independent sources with a visibility of 95%, and an entangled photon pair source, with a fidelity of 89% with a Bell state.

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