Kuo, P.
, Pelc, J.
, Langrock, C.
and Fejer, M.
(2018),
Using Temperature to Reduce Noise in Quantum Frequency Conversion, Optics Letters, [online], https://doi.org/10.1364/OL.43.002034
(Accessed March 6, 2025)
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Using Temperature to Reduce Noise in Quantum Frequency Conversion
Published
Author(s)
, Jason S. Pelc, Carsten Langrock, M. M. Fejer
Abstract
Quantum frequency conversion (QFC) is important in quantum networks to interface nodes operating at different wavelengths and to enable long-distance quantum communication using telecommunications wavelengths. Unfortunately, frequency conversion in actual devices is not a noise-free process. One main source of noise is spontaneous Raman scattering, which can be reduced by lowering the device operating temperature. We explore frequency conversion of 1554-nm photons to 837 nm using a 1813-nm pump in a periodically poled lithium niobate waveguide device. By reducing the temperature from 85 C to 40 C, we show dark count rates can be reduced significantly, which is in good agreement with theory.Citation
Optics Letters
Volume
43
Issue
9
Pub Type
Journals
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Created April 22, 2018, Updated March 1, 2021