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Single-photon interference due to motion in an atomic collective excitation.

Whiting, Daniel J. and Šibalić, Nikola and Keaveney, James and Adams, Charles S. and Hughes, Ifan G. (2017) 'Single-photon interference due to motion in an atomic collective excitation.', Physical review letters., 118 (25). p. 253601.


We experimentally demonstrate the generation of heralded bi-chromatic single photons from an atomic collective spin excitation (CSE). The photon arrival times display collective quantum beats, a novel interference effect resulting from the relative motion of atoms in the CSE. A combination of velocity-selective excitation with strong laser dressing and the addition of a magnetic field allows for exquisite control of this collective beat phenomenon. The present experiment uses a diamond scheme with near-IR photons that can be extended to include telecommunications-wavelengths or modified to allow storage and retrieval in an inverted-Y scheme.

Item Type:Article
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Publisher statement:Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Date accepted:23 May 2017
Date deposited:30 May 2017
Date of first online publication:22 June 2017
Date first made open access:28 June 2017

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