Improved fidelity of triggered entangled photons from single quantum dots
By Robert J. Young, R. Stevenson, P. Atkinson, K. Cooper, David A. Ritchie, Andrew J. Shields. 2006
245 citations recorded by the source corpus.
We demonstrate the triggered emission of polarization-entangled photon pairs from the biexciton cascade of a single InAs quantum dot embedded in a GaAs/AlAs planar microcavity. Improvements in the sample design blue shifts the wetting layer to reduce the contribution of background light in the measurements. Results presented show that >70% of the detected photon pairs are entangled. The high fidelity of the state that we determine is sufficient to satisfy numerous tests for entanglement. The improved quality of entanglement represents a significant step towards the realization of a practical quantum dot source compatible with applications in quantum information.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/a609c5c96f5c56ec00550d2a60c57b61c1c54817
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In Artificial Intelligence
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Optical Properties of Semiconductor Quantum Dots (2008, background): “Self-assembled quantum dots (QDs) proved an excellent system for the implementation of quantum bits [91, 94, 95] and as sources of single [9, 96] and entangled photons [10, 97, 98].”
- Metrology of single-photon sources and detectors: a review (2014, methodology): “Optically pumped semiconductor sources have also been used to generate polarization-entangled photons.(52,53) Indistinguishability of single photons emitted by an electrically pumped source has also been demonstrated.”
- Semiconductor quantum light sources (2007, methodology): “Entanglement of the X or X 2 photons was recently observed experimentally for the first time by Stevenson, Young and co-worker”