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21 February 2011 A light emitting diode for entangled photons
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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'.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);

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