Abstract

We report on cascaded frequency conversion at the single-photon level, consisting of a downconversion from the red (738 nm) to a telecom band (1403 nm) and the reverse upconversion process in the same nonlinear crystal. Detecting the converted single photons suffers from a large noise floor. We were able to recover the signal by implementing a lock-in analyzer technique in the data postprocessing.

© 2012 Optical Society of America

Cascaded frequency upconversion for high-speed single-photon detection at 1550 nm

J. S. Pelc, Q. Zhang, C. R. Phillips, L. Yu, Y. Yamamoto, and M. M. Fejer
Opt. Lett. 37(4) 476-478 (2012)

Reducing noise in single-photon-level frequency conversion

Paulina S. Kuo, Jason S. Pelc, Oliver Slattery, Yong-Su Kim, M. M. Fejer, and Xiao Tang
Opt. Lett. 38(8) 1310-1312 (2013)

Efficient frequency downconversion at the single photon level from the red spectral range to the telecommunications C-band

Sebastian Zaske, Andreas Lenhard, and Christoph Becher
Opt. Express 19(13) 12825-12836 (2011)

High-efficiency frequency conversion in the single-photon regime

Alex S. Clark, Shayan Shahnia, Matthew J. Collins, Chunle Xiong, and Benjamin J. Eggleton
Opt. Lett. 38(6) 947-949 (2013)

Dual-channel, single-photon upconversion detector at 1.3 μm

J. S. Pelc, Paulina S. Kuo, Oliver Slattery, Lijun Ma, Xiao Tang, and M. M. Fejer
Opt. Express 20(17) 19075-19087 (2012)