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

Abstract

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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Cited by in corpus (10)

• Nonlinear optical signals and spectroscopy with quantum light
• Single organic molecules for photonic quantum technologies
• Tailoring the degree of entanglement of two coherently coupled quantum emitters
• Phonon-induced optical dephasing in single organic molecules
• Electrical control of lifetime-limited quantum emitters using 2D materials
• Photon indistinguishability measurements under pulsed and continuous excitation
• Polymer-encapsulated organic nanocrystals for single photon emission
• Generation of polarization-entangled photon pairs from two interacting quantum emitters
• Sub-nanosecond coherent optical manipulation of a single aromatic molecule at cryogenic temperature
• Enhanced phonon lifetimes with optically controlled single molecules