A light emitting diode for entangled photons

R. M. Stevenson; C. L. Salter; I. Farrer; C. A. Nicoll; D. A. Ritchie; A. J. Shields

doi:10.1117/12.879765

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21 February 2011 A light emitting diode for entangled photons

R. M. Stevenson, C. L. Salter, I. Farrer, C. A. Nicoll, D. A. Ritchie, A. J. Shields

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Proceedings Volume 7933, Physics and Simulation of Optoelectronic Devices XIX; 79331U (2011) https://doi.org/10.1117/12.879765
Event: SPIE OPTO, 2011, San Francisco, California, United States

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'.

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R. M. Stevenson, C. L. Salter, I. Farrer, C. A. Nicoll, D. A. Ritchie, and A. J. Shields "A light emitting diode for entangled photons", Proc. SPIE 7933, Physics and Simulation of Optoelectronic Devices XIX, 79331U (21 February 2011); https://doi.org/10.1117/12.879765

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