2010/11/29 by Jean-Baptiste Trebbia, Philippe Tamarat, Brahim Lounis · 39 citations
Chemistry · Computer Science · Physics and Astronomy · #Atomic physics #Chemistry #Coalescence (physics) #Dephasing #Infrared #Interference (communication) #Mechanical and Optical Resonators #Molecular physics #Molecule #Optics #Photon #Physics #Polarization (electrochemistry) #Quantum #Quantum Information and Cryptography #Quantum interference #Quantum mechanics #Quantum optics and atomic interactions #Single-photon source #quant-ph
paper · pdf · doi:10.1103/physreva.82.063803
published in Physical Review A 82(6) (American Physical Society)
arxiv created 2010/11/29 · openalex publication_date 2010/12/02 · arxiv updated 2015/05/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 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 postselected polarization-entangled photon pairs as a test bench for applications in quantum information.