中国物理B ›› 2016, Vol. 25 ›› Issue (7): 74203-074203.doi: 10.1088/1674-1056/25/7/074203
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
Nan-Nan Liu(刘楠楠), Yu-Hong Liu(刘宇宏), Jia-Min Li(李嘉敏), Xiao-Ying Li(李小英)
Nan-Nan Liu(刘楠楠), Yu-Hong Liu(刘宇宏), Jia-Min Li(李嘉敏), Xiao-Ying Li(李小英)
摘要:
We study the photon statistics of pulse-pumped four-wave mixing in fibers with weak coherent signal injection by measuring the intensity correlation functions of individual signal and idler fields. The experimental results show that the intensity correlation function of individual signal (idler) field gs(i)(2) decreases with the intensity of signal injection. After applying narrow band filter in signal (idler) band, the value of gs(i)(2) decreases from 1.9±0.02 (1.9±0.02) to 1.03±0.02 (1.05±0.02) when the intensity of signal injection varies from 0 to 120 photons/pulse. The results indicate that the photon statistics changes from Bose-Einstein distribution to Poisson distribution. We calculate the intensity correlation functions by using the multi-mode theory of four-wave mixing in fibers. The theoretical curves well fit the experimental results. Our investigation will be useful for mitigating the crosstalk between quantum and classical channels in a dense wavelength division multiplexing network.
中图分类号: (Quantum optics)