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Controlling the polarisation correlation of photon pairs from a charge-tuneable quantum dot

arXiv

Authors: R. J. Young, S. J. Dewhurst, R. M. Stevenson, A. J. Shields, P. Atkinson, K. Cooper, D. A. Ritchie

Year

2007

Paper ID

50055

Status

Preprint

Abstract Read

~2 min

Abstract Words

100

Citations

N/A

Abstract

Correlation between the rectilinear polarisations of the photons emitted from the biexciton decay in a single quantum dot is investigated in a device which allows the charge-state of the dot to be controlled. Optimising emission from the neutral exciton states maximises the operating efficiency of the biexciton decay. This is important for single dot applications such as a triggered source of entangled photons. As the bias on the device is reduced correlation between the two photons is found to fall dramatically as emission from the negatively charged exciton becomes significant. Lifetime measurements demonstrate that electronic spin-scattering is the likely cause.

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Correlation between the rectilinear polarisations of the photons emitted from the biexciton decay in a single quantum dot is investigated in a device which allows the...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0706.0853 [2] arXiv https://arxiv.org/abs/0706.0853 [3] Publisher https://arxiv.org/abs/0706.0853

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