Cavity-assisted emission of polarization-entangled photons from biexcitons in quantum dots with fine-structure splitting

S. Schumacher, J. Förstner, A. Zrenner, M. Florian, C. Gies, P. Gartner, F. Jahnke, Optics Express 20 (2012).

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Journal Article | Published | English
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We study the quantum properties and statistics of photons emitted by a quantum-dot biexciton inside a cavity. In the biexciton-exciton cascade, fine-structure splitting between exciton levels degrades polarization-entanglement for the emitted pair of photons. However, here we show that the polarization-entanglement can be preserved in such a system through simultaneous emission of two degenerate photons into cavity modes tuned to half the biexciton energy. Based on detailed theoretical calculations for realistic quantum-dot and cavity parameters, we quantify the degree of achievable entanglement.
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Journal Title
Optics Express
Volume
20
Issue
5
Article Number
5335-5342
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Schumacher S, Förstner J, Zrenner A, et al. Cavity-assisted emission of polarization-entangled photons from biexcitons in quantum dots with fine-structure splitting. Optics Express. 2012;20(5). doi:10.1364/oe.20.005335
Schumacher, S., Förstner, J., Zrenner, A., Florian, M., Gies, C., Gartner, P., & Jahnke, F. (2012). Cavity-assisted emission of polarization-entangled photons from biexcitons in quantum dots with fine-structure splitting. Optics Express, 20(5). https://doi.org/10.1364/oe.20.005335
@article{Schumacher_Förstner_Zrenner_Florian_Gies_Gartner_Jahnke_2012, title={Cavity-assisted emission of polarization-entangled photons from biexcitons in quantum dots with fine-structure splitting}, volume={20}, DOI={10.1364/oe.20.005335}, number={55335–5342}, journal={Optics Express}, publisher={OSA}, author={Schumacher, Stefan and Förstner, Jens and Zrenner, Artur and Florian, Matthias and Gies, Christopher and Gartner, Paul and Jahnke, Frank}, year={2012} }
Schumacher, Stefan, Jens Förstner, Artur Zrenner, Matthias Florian, Christopher Gies, Paul Gartner, and Frank Jahnke. “Cavity-Assisted Emission of Polarization-Entangled Photons from Biexcitons in Quantum Dots with Fine-Structure Splitting.” Optics Express 20, no. 5 (2012). https://doi.org/10.1364/oe.20.005335.
S. Schumacher et al., “Cavity-assisted emission of polarization-entangled photons from biexcitons in quantum dots with fine-structure splitting,” Optics Express, vol. 20, no. 5, 2012.
Schumacher, Stefan, et al. “Cavity-Assisted Emission of Polarization-Entangled Photons from Biexcitons in Quantum Dots with Fine-Structure Splitting.” Optics Express, vol. 20, no. 5, 5335–5342, OSA, 2012, doi:10.1364/oe.20.005335.
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