arXiv 0804.06632008-04-04cond-mat.otherquant-ph

Cavity-enhanced radiative emission rate in a single-photon-emitting diode operating at 0.5 GHz

David J. P. Ellis, Anthony J. Bennett, Samuel J. Dewhurst, Christine A. Nicoll, David A. Ritchie, Andrew J. Shields

备注：: 11 pages, 4 Figures. To be published in New Journal of Physics
DOI：: 10.1088/1367-2630/10/4/043035

英文摘要：

We report the observation of a Purcell enhancement in the electroluminescence decay rate of a single quantum dot, embedded in a microcavity light-emitting-diode structure. Lateral confinement of the optical mode was achieved using an annulus of low-refractive-index aluminium oxide, formed by wet oxidation. The same layer acts as a current aperture, reducing the active area of the device without impeding the electrical properties of the p-i-n diode. This allowed single photon electroluminescence to be demonstrated at repetition rates up to 0.5 GHz.

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