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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.
Optics Letters


Wavelength conversion devices, Nonlinear optics, devices


Kuo, P. , Pelc, J. , Slattery, O. , Kim, Y. , Fejer, M. and Tang, X. (2013), Reducing noise in single-photon frequency conversion, Optics Letters, [online], (Accessed October 2, 2023)
Created April 10, 2013, Updated November 10, 2018