Indistinguishable near infra-red single photons from an individual organic molecule

Details Indistinguishable near infra-red single photons from an individual organic molecule Indistinguishable near infra-red single photons from an individual organic molecule

2010-11-29

arxiv.org/abs/1011.6152v1

Physics

Quantum Physics

Scientific paper

By using the zero-phonon line emission of an individual organic molecule, we realized a source of indistinguishable single photons in the near infrared. A Hong-Ou-Mandel interference experiment is performed and a two-photon coalescence probability of higher than 50% at 2 K is obtained. The contribution of the temperature-dependent dephasing processes to the two-photon interference contrast is studied. We show that the molecule delivers nearly ideal indistinguishable single photons at the lowest temperatures when the dephasing is nearly lifetime limited. This source is used to generate post-selected polarization-entangled photon pairs, as a test-bench for applications in quantum information.

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