An entangled-light-emitting diode

C. L. Salter, R. M. Stevenson (), I. Farrer, C. A. Nicoll, D. A. Ritchie and A. J. Shields ()
Additional contact information
C. L. Salter: Toshiba Research Europe Limited, 208 Cambridge Science Park, Cambridge CB4 0GZ, UK
R. M. Stevenson: Toshiba Research Europe Limited, 208 Cambridge Science Park, Cambridge CB4 0GZ, UK
I. Farrer: Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, UK
C. A. Nicoll: Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, UK
D. A. Ritchie: Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, UK
A. J. Shields: Toshiba Research Europe Limited, 208 Cambridge Science Park, Cambridge CB4 0GZ, UK

Nature, 2010, vol. 465, issue 7298, 594-597

Abstract: Entanglement to order For optical quantum computation and related information technologies to fulfil their promise, they will require a source of entangled photons that can be delivered efficiently on demand. Existing entangled-light sources are laser driven, and involve bulky and complicated optics. Salter et al. have now developed a compact light-emitting diode with an embedded quantum dot that can be driven electrically to generate entangled photon pairs. Much simpler than its laser-driven counterparts, this ELED (entangled-light-emitting diode) device, based on conventional semiconductor materials, is a promising start point for the development of an entangled light source for quantum information applications.

Date: 2010
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DOI: 10.1038/nature09078

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