Photon-number-resolving detection at 1.04 μm by coincidence frequency upconversion
Kun Huang, Xiaorong Gu, Min Ren, Jian Yi, Pan Haifeng, E Wu, Heping Zeng · 2011
We demonstrated the photon-number-resolving detection at 1.04 μm by coincidence frequency upconverison. The detection efficiency of 6.8% was obtained. The Poissionian distribution of the up-converted photons was observed directly.