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Highly efficient source for indistinguishable single photons of controlled shape
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP. Clarendon Laboratory, University of Oxford, United Kingdom .
2011 (English)In: New Journal of Physics, ISSN 1367-2630, Vol. 13Article in journal (Refereed) Published
Abstract [en]

We demonstrate a straightforward implementation of a push-button like single-photon source, which is based on a strongly coupled atom-cavity system. The device operates intermittently for periods of up to 100μs, with single-photon repetition rates of 1.0MHz and an efficiency of 60%. Atoms are loaded into the cavity using an atomic fountain, with the upper turning point near the cavity's mode centre. This ensures long interaction times without any disturbances induced by trapping potentials. The latter is the key to reaching deterministic efficiencies as high as obtained in probabilistic photon-heralding schemes. The price to pay is the random loading of atoms into the cavity and the resulting intermittency. However, for all practical purposes, this has a negligible impact as an individual atom may emit up to 100 successive photons.

Place, publisher, year, edition, pages
2011. Vol. 13
Keyword [en]
Atom-cavity systems, Atomic fountains, Controlled shape, Intermittency, Random loading, Repetition rate, Single photons, Single-photon source, Trapping potential, Turning points, Atoms, Particle beams, Photons
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:kth:diva-150739DOI: 10.1088/1367-2630/13/10/103036ISI: 000296663600002ScopusID: 2-s2.0-80155207417OAI: diva2:745726

QC 20140911

Available from: 2014-09-11 Created: 2014-09-09 Last updated: 2014-09-11Bibliographically approved

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Ljunggren, Daniel
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