Optimizing single-mode collection from pointlike sources of single photons with adaptive optics
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The collection efficiency of light from a point-like emitter may be extremely poor due to aberrations induced by collection optics and the emission distribution of the source. Analyzing the aberrant wavefront (e.g., with a Shack-Hartmann sensor) and correcting accordingly can be infeasible on the single-photon level. We present a technique that uses a genetic algorithm to control a deformable mirror for correcting wavefront aberrations in single-photon signals from point emitters. We apply our technique to both a simulated point source and a real InAs quantum dot, achieving coupling increases of up to 50x00025; and automatic reduction of system drift.
Hill , A D , Hervas , D , Nash , J , Graham , M , Burgers , A , Paudel , U , Steel , D , Schneider , C , Kamp , M , Höfling , S , Wang , J , Lin , J , Zhao , W & Kwiat , P G 2017 , ' Optimizing single-mode collection from pointlike sources of single photons with adaptive optics ' Optics Express , vol 25 , no. 16 , pp. 18629-18642 . DOI: 10.1364/OE.25.018629
© 2017 Optical Society of America. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at: https://doi.org/10.1364/OE.25.018629
Army Research Office MURI on Hybrid Quantum Interactions Program W911NF09104.
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