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arXiv · 1410.7714

Shaping the joint spectrum of down-converted photons through optimized custom poling

Annamaria Dosseva·Lukasz Cincio·Agata M. Branczyk
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Abstract

We present a scheme for engineering the joint spectrum of photon pairs created via spontaneous parametric down conversion. Our method relies on customizing the poling configuration of a quasi-phase-matched crystal. We use simulated annealing to find an optimized poling configuration which allows almost arbitrary shaping of the crystal's phase-matching function. This has direct application in the creation of pure single photons---currently one of the most important goals of single-photon quantum optics. We describe the general algorithm and provide code, written in C++, that outputs an optimized poling configuration given specific experimental parameters.

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Annamaria Dosseva, Lukasz Cincio, Agata M. Branczyk. 2016-02-01. Shaping the joint spectrum of down-converted photons through optimized custom poling. https://doi.org/10.1103/physreva.93.013801

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