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Polarization-correlated photons from a positively charged quantum dot

Cao, Y., Bennett, Anthony, Farrer, I., Ritchie, D. A. and Shields, A. J. 2015. Polarization-correlated photons from a positively charged quantum dot. Physical Review B 92 (8) , 081302(R). 10.1103/PhysRevB.92.081302

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Polarized cross-correlation spectroscopy on a quantum dot charged with a single hole shows the sequential emission of photons with common circular polarization. This effect is visible without magnetic field, but becomes more pronounced as the field along the quantization axis is increased. We interpret the data in terms of electron dephasing in the X+ state caused by the Overhauser field of nuclei in the dot. We predict the correlation time scale can be increased by accelerating the emission rate with cavity QED.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: American Physical Society
ISSN: 2469-9950
Last Modified: 06 Dec 2017 17:00

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