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arXiv · 1812.07165

Direct Excitation of a Single Quantum Dot with Cavity-SPDC Photons

Uttam Paudel·Jia Jun Wong·Michael Goggin·Paul Kwiat·Allan S. Bracker·Michael Yakes·Daniel Gammon·Duncan Steel
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Abstract

The ability to generate mode-engineered single photons to interface with disparate quantum systems is of importance for building a quantum network. Here we report on the generation of a pulsed, heralded single photon source with a sub-GHz spectral bandwidth that couples to indium arsenide quantum dots centered at 942 nm. The source is built with a type-II PPKTP down-conversion crystal embedded in a semi-confocal optical cavity and pumped with a 76 MHz repetition rate pulsed laser to emit collinear, polarization-correlated photon pairs resonant with a single quantum dot. In order to demonstrate direct coupling, we use the mode-engineered cavity-SPDC single-photon source to resonantly excite an isolated single quantum dot.

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Uttam Paudel, Jia Jun Wong, Michael Goggin, Paul Kwiat, Allan S. Bracker, Michael Yakes, Daniel Gammon, Duncan Steel. 2019-05-25. Direct Excitation of a Single Quantum Dot with Cavity-SPDC Photons. https://doi.org/10.1364/oe.27.016308

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