July 2014 archive

GaAs nanowires go brighter

Semiconductor nanowires have been extensively investigated in the last few years due to their new physical properties and enormous perspectives for applications. In this work, we investigate the effects of GaAsP passivation on strained GaAs core-shell nanowires. We demonstrate that, as a result of the decrease of the density of surface states, 4 orders of …

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Pumping single photons with SAWs

Surface acoustic waves (SAWs) have were employed to demonstrate high frequency (750MHz) single-photon sources (SPS). By remotely pumping electrons and holes into a GaAs quantum well, we were able to transport and inject them into quantum dots which work as efficient SPS. Our achievements represent a novel approach in the direction of high speed quantum …

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