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Trapped Ion Quantum Computing Quantum Chemistry

Exciton-spin memory with a semiconductor quantum dot molecule

arXiv
Authors: A. Boyer de la Giroday, N. Skold, R. M. Stevenson, I. Farrer, D. A. Ritchie, A. J. Shields

Year

2011

Paper ID

8765

Status

Preprint

Abstract Read

~2 min

Abstract Words

91

Citations

N/A

Abstract

We report on a single photon and spin storage device based on a semiconductor quantum dot molecule. Optically excited single electron-hole pairs are trapped within the molecule and their recombination rate is electrically controlled over three orders of magnitude. Single photons are stored up to 1 microsecond and read out on a sub-nanosecond timescale. Using resonant excitation, the circular polarisation of individual photons is transferred into the spin state of electron-hole pairs with a fidelity above 80%, which does not degrade for storage times up to the 12.5ns repetition period of the experiment.

Why This Paper Matters

  • This paper contributes to the Quantum Chemistry research area in the Quantum Articles archive.
  • It adds a 2011 reference point for readers tracking recent quantum research.
  • We report on a single photon and spin storage device based on a semiconductor quantum dot molecule.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1105.3737 [2] arXiv https://arxiv.org/abs/1105.3737 [3] Publisher https://arxiv.org/abs/1105.3737

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