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'Plug and play' single-photon sources

Lookup NU author(s): Dr Jonathan Mar



This is the final published version of an article that has been published in its final definitive form by AIP Publishing LLC, 2007.

For re-use rights please refer to the publisher's terms and conditions.


The authors report a “plug and play” source of single photons, with full integration to a single-mode optical fiber. One end of the fiber is attached to the top of an InGaAs/GaAs quantum dot wafer. The other end is connected via a wavelength-division multiplexing system to two separate fibers: one for carrying excitation light and the other for emitted light. A Hanbury-Brown and Twiss [Nature (London) 77, 27 (1956)] measurement was performed on the emission from single excitons recombining in the quantum dots. A second-order correlation function at zero time delay of approximately 0.01 indicates a nearly ideal source of single photons. The maximum variation of peak position over 24 days is less than 0.1 nm.

Publication metadata

Author(s): Xu X, Toft I, Phillips RT, Mar J, Hammura K, Williams DA

Publication type: Article

Publication status: Published

Journal: Applied Physics Letters

Year: 2007

Volume: 90

Online publication date: 05/02/2007

Date deposited: 15/06/2020

ISSN (print): 0003-6951

ISSN (electronic): 1520-8842

Publisher: AIP Publishing LLC


DOI: 10.1063/1.2437727


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