Quantum Frequency Conversion of Near-Infrared Photon Sources for Communications in the C-band
A Bright Source of Telecom Single Photons Based on Quantum Frequency Conversion
We present quantum frequency conversion of near-infrared photons from a bright quantum dot to the telecommunication c-band, allowing integration with existing fibre architectures.
We use a custom-built, tunable 2400 nm seed laser to convert single photons from 942 nm to 1550 nm in a difference frequency generation process.
We achieve an end-to-end conversion efficiency of demonstrate count rates approaching 1 mhz at 1550 nm with and achieve hong-ou-mandelvisibilities of 60%.
Christopher L. Morrison, Markus Rambach, Zhe Xian Koong, Francesco Graffitti, Fiona Thorburn, Ajoy K. Kar, Yong Ma, Suk-In Park, Jin Dong Song, Nick G. Stoltz, Dirk Bouwmeester, Alessandro Fedrizzi, Brian D. Gerardot