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Proceedings Paper

A light emitting diode for entangled photons
Author(s): R. M. Stevenson; C. L. Salter; I. Farrer; C. A. Nicoll; D. A. Ritchie; A. J. Shields
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Paper Abstract

Existing sources of entangled photons require a laser excitation, imposing a practical limit on their potential for large-scale quantum information applications. For the widely used parametric down-conversion sources, zero or multiple photon-pairs are usually emitted due to the probabilistic nature of the non-linear process. This presents an additional fundamental limitation in the form of efficiency and errors. Here we demonstrate the first electrically driven entangled light source, based on a layer of InAs quantum dots embedded in a p-i-n light emitting diode structure, with potential to operate 'on-demand'.

Paper Details

Date Published: 21 February 2011
PDF: 6 pages
Proc. SPIE 7933, Physics and Simulation of Optoelectronic Devices XIX, 79331U (21 February 2011); doi: 10.1117/12.879765
Show Author Affiliations
R. M. Stevenson, Toshiba Research Europe Ltd. (United Kingdom)
C. L. Salter, Toshiba Research Europe Ltd. (United Kingdom)
Univ. of Cambridge (United Kingdom)
I. Farrer, Univ. of Cambridge (United Kingdom)
C. A. Nicoll, Univ. of Cambridge (United Kingdom)
D. A. Ritchie, Univ. of Cambridge (United Kingdom)
A. J. Shields, Toshiba Research Europe Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 7933:
Physics and Simulation of Optoelectronic Devices XIX
Bernd Witzigmann; Fritz Henneberger; Yasuhiko Arakawa; Alexandre Freundlich, Editor(s)

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