Reducing noise in single-photon frequency conversion
Paulina S. Kuo, Jason S. Pelc, Oliver T. Slattery, Yong-Su Kim, Martin M. Fejer, Xiao Tang
We demonstrate low-noise and efficient frequency conversion using sum-frequency mixing in a periodically poled LiNbO3 (PPLN) waveguide. Using a 1556 nm pump, 1302 nm photons are efficiently converted to 709 nm photons. We obtain 70% conversion efficiency in the PPLN waveguide and >50% external conversion efficiency. We achieve simultaneous low dark-count rates and high conversion efficiency by careful spectral filtering to eliminate noise. We discuss the impact of low-noise frequency translation on quantum frequency conversion and upconversion detection.
, Pelc, J.
, Slattery, O.
, Kim, Y.
, Fejer, M.
and Tang, X.
Reducing noise in single-photon frequency conversion, Optics Letters, [online], https://doi.org/10.1364/OL.38.001310
(Accessed January 26, 2022)