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arXiv · 2404.18686

Dynamic temperature compensation for wavelength-stable entangled biphoton generation

Yuting Liu·Huibo Hong·Xiao Xiang·Runai Quan·Tao Liu·Mingtao Cao·Shougang Zhang·Ruifang Dong
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Abstract

A dynamic temperature compensation method is presented to stabilize the wavelength of the entangled biphoton source, which is generated via the spontaneous parametric down-conversion based on a MgO: PPLN waveguide. Utilizing the dispersive Fourier transformation technique combined with a digital proportional-integral-differential algorithm, the small amount of wavelength variation can be instantly identified and then compensated with active temperature correction. The long-term wavelength stability, assessed though Allan deviation, shows nearly a hundredfold enhancement, reaching 2.00*10^(-7) at the averaging time of 10000 s. It offers a simple, ready-to-use solution for precise wavelength control in quantum information processing.

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Yuting Liu, Huibo Hong, Xiao Xiang, Runai Quan, Tao Liu, Mingtao Cao, Shougang Zhang, Ruifang Dong. 2024-04-29. Dynamic temperature compensation for wavelength-stable entangled biphoton generation. https://arxiv.org/abs/2404.18686

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