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arXiv · 2501.07010

Periodically poled thin-film lithium niobate ring Mach Zehnder coupling interferometer for efficient quantum frequency conversion

Mrinmoy Kundu·Bejoy Sikder·Mark Earnshaw·A. Sayem
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Abstract

Quantum frequency conversion is unavoidable for a true quantum communication network as most quantum memories work in the visible spectrum. Here, we propose a unique design of a quantum frequency converter based on a ring-Mach Zehnder interferometer coupled with a periodically poled thin-film lithium niobate waveguide. The proposed device can be-directionally convert quantum signals i.e. single photons from quantum memory such as SiV-center in diamond to the telecom wavelength offering conversion efficiency as high as 90% at mW pump power with noise photon rate below 0.1Hz.

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Mrinmoy Kundu, Bejoy Sikder, Mark Earnshaw, A. Sayem. 2025-01-13. Periodically poled thin-film lithium niobate ring Mach Zehnder coupling interferometer for efficient quantum frequency conversion. https://arxiv.org/abs/2501.07010

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