On the indistinguishability of Raman photons

2009/07/31 by Charles Santori, David Fattal, Kai-Mei C. Fu +5
Computer Science · Physics and Astronomy · #Dephasing #Excited state #Filter (signal processing) #Noise (video) #Photon #Quantum Information and Cryptography #Quantum optics and atomic interactions #Raman scattering #Raman spectroscopy #Strong Light-Matter Interactions #quant-ph

paper · pdf · doi:10.1088/1367-2630/11/12/123009

published as New Journal of Physics 11, 123009 (2009) · 18 pages, 3 figures, final version

openalex publication_date 2009/12/04 · arxiv created 2009/12/10 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We provide a theoretical framework to study the effect of dephasing on the quantum indistinguishability of single photons emitted from a coherently driven cavity QED Λ-system. We show that with a large excited-state detuning, the photon indistinguishability can be drastically improved provided that the fluctuation rate of the noise source affecting the excited state is fast compared with the photon emission rate. In some cases a spectral filter is required to realize this improvement, but the cost in efficiency can be made small.

Citations

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