Title :
High-Speed Single-Photon Frequency Upconversion With Synchronous Pump Pulses
Author :
Gu, Xiaorong ; Li, Yao ; Pan, Haifeng ; Wu, E. ; Zeng, Heping
Author_Institution :
State Key Lab. of Precision Spectrosc., East China Normal Univ., Shanghai, China
Abstract :
Single-photon signals at 1.56 ??m were converted into the visible region by sum-frequency generation, with synchronous pump pulses at 1.03 ??m in a periodically poled lithium niobate crystal. The signal and pump sources were provided by two synchronized mode-locked fiber lasers at the operation rate of 7.88 MHz. Such a high-speed single-photon upconversion system has shown an overall detection efficiency of 10.4%. The corresponding background noise was measured to be 3.3 ?? 103 s-1. The noise-equivalent power in this scheme was 9.93 ?? 10-17 W/Hz1/2, which was the lowest compared to the other upconversion systems with similar pump and signal wavelengths.
Keywords :
high-speed optical techniques; infrared detectors; lithium compounds; optical frequency conversion; optical pumping; photodetectors; LiNbO3; background noise; detection efficiency; efficiency 10.4 percent; frequency 7.88 MHz; high-speed single-photon frequency upconversion; infrared single-photon detectors; noise-equivalent power; operation rate; periodically poled lithium niobate crystal; signal sources; sum-frequency generation; synchronized mode-locked fiber lasers; synchronous pump pulses; wavelength 1.03 mum; wavelength 1.56 mum; Frequency upconversion; nonlinear optics; quantum detectors; single-photon detection;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2009.2024329
