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A pump enhanced source of telecoms-band correlated photons pairs.

Thomas, P J; Dunn. M H*,, ; Stothard, D J M*; Walsh, D A*; Chunnilall, C J (2011) A pump enhanced source of telecoms-band correlated photons pairs. J. Mod. Opt., 58 (8). pp. 631-639.

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Abstract

Correlated photon pairs generated through spontaneous parametric downconversion have become a key resource for research into enhanced optical measurement and quantum optical information processing. A pump-enhanced chi(2) source of correlated photons in the telecoms band is presented. An investigation of the pair photon coincidence detection rate measured from the source together with the evaluation of system losses indicated a single spatial fibre optic mode pair production rate of 6.24 ´ 104 s-1 mW-1 pump power, an order of magnitude greater than was measured without enhancement. A Hong-Ou-Mandel interference experiment confirmed that the enhancement did not have any adverse effect on the spatial and frequency indistinguishability of the emitted pairs. The source is suitable for incorporation into a single crystal scheme for generating polarisation entangled photon pairs.

Item Type: Article
Keywords: correlated photons, telecom, parametric downconversion, Hong-Ou-Mandel
Subjects: Optical Radiation and Photonics
Quantum Phenomena
Optical Radiation and Photonics > Few Photon Science
Quantum Phenomena > Quantum Information Processing and Communication
Identification number/DOI: 10.1080/09500340.2011.561421
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/4959

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