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Telecom-wavelength single-photon sources for quantum communications

A Fiore1,2, C Zinoni1, B Alloing1, C Monat1, L Balet1, L H Li1, N Le Thomas1, R Houdré1, L Lunghi2, M Francardi2, A Gerardino2 and G Patriarche3

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This paper describes the progress towards the realization of efficient single-photon sources based on semiconductor quantum dots (QDs), for application in quantum key distribution and, more generally, quantum communications. We describe the epitaxial growth of QD arrays with low areal density and emitting in the telecom wavelength range, the nanofabrication of single-QD structures and devices, and their optical and electro-optical characterization. The potential for integration with monolithic microcavities is also discussed.


PACS

78.67.Hc Quantum dots

68.65.Hb Quantum dots (patterned in quantum wells)

81.16.-c Methods of nanofabrication and processing

78.55.Cr III-V semiconductors

78.60.Fi Electroluminescence

78.20.Jq Electrooptical effects

Subjects

Condensed matter: electrical, magnetic and optical

Semiconductors

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Dates

Issue 22 (6 June 2007)

Received 15 August 2006, in final form 12 October 2006

Published 14 May 2007



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