Direct generation of photon triplets using cascaded photon-pair sources

Hannes Hübel (), Deny R. Hamel, Alessandro Fedrizzi, Sven Ramelow, Kevin J. Resch and Thomas Jennewein ()
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Hannes Hübel: University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
Deny R. Hamel: University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
Alessandro Fedrizzi: University of Queensland, Brisbane, Queensland 4072, Australia
Sven Ramelow: Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
Kevin J. Resch: University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
Thomas Jennewein: University of Waterloo, Waterloo, Ontario N2L 3G1, Canada

Nature, 2010, vol. 466, issue 7306, 601-603

Abstract: Entangled photon triplets Entangled photons are a powerful resource for fundamental science and have the potential to fuel novel quantum technologies in computation and communication. Entangled photon pairs can be created by spontaneous parametric down-conversion of laser light, but until now it has not been possible to produce photon triplets in this way. Hübel et al. now report the direct generation of photon triplets using a cascade of photon-pair sources, in which each triplet originates from just a single pump photon, leading to quantum correlations between all three photons.

Date: 2010
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DOI: 10.1038/nature09175

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