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arXiv · 2105.06783

Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots

David Bauch·Dirk Heinze·Jens Förstner·Klaus D. Jöns·Stefan Schumacher
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Abstract

Employing the ultrafast control of electronic states of a semiconductor quantum dot in a cavity, we introduce a novel approach to achieve on-demand emission of single photons with almost perfect indistinguishability and photon pairs with near ideal entanglement. Our scheme is based on optical excitation off-resonant to a cavity mode followed by ultrafast control of the electronic states using the time-dependent quantum-confined Stark effect, which then allows for cavity-resonant emission. Our theoretical analysis takes into account cavity-loss mechanisms, the Stark effect, and phonon-induced dephasing allowing realistic predictions for finite temperatures.

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David Bauch, Dirk Heinze, Jens Förstner, Klaus D. Jöns, Stefan Schumacher. 2021-05-14. Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots. https://doi.org/10.1103/physrevb.104.085308

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