Optimal collection of radiation emitted by a trapped atomic ensemble
Wigner Research Centre for Physics, P.O. Box 49, H-1525, Budapest, Hungary
2 Department of Physics and Astronomy, Aarhus University, DK-8000, Aarhus C, Denmark
3 Physikalisches Institut, Eberhard Karls Universität Tübingen, D-72076, Tübingen, Germany
4 Institute of Electronic Structure and Laser, Foundation for Research and Technology – Hellas, GR-70013, Heraklion, Crete, Greece
Accepted: 5 May 2021
Published online: 13 May 2021
Trapped atomic ensembles are convenient systems for quantum information storage in the long-lived sublevels of the electronic ground state and its conversion to propagating optical photons via stimulated Raman processes. Here we investigate a phase-matched emission of photons from a coherently prepared atomic ensemble. We consider an ensemble of cold atoms in an elongated harmonic trap with normal density distribution, and determine the parameters of paraxial optics to match the mode geometry of the emitted radiation and optimally collect it into an optical waveguide.
Key words: Cold atoms / Microwave / Single photon source / Fiber optics / Gaussian optics / Raman process
© The Author(s) 2021
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