中红外单光子计数

Mid-infrared single-photon counting.

作者信息

Temporão Guilherme, Tanzilli Sébastien, Zbinden Hugo, Gisin Nicolas, Aellen Thierry, Giovannini Marcella, Faist Jérome

机构信息

Group of Applied Physics, University of Geneva, 1211 Geneva 4, Switzerland.

出版信息

Opt Lett. 2006 Apr 15;31(8):1094-6. doi: 10.1364/ol.31.001094.

DOI:10.1364/ol.31.001094

PMID:16625914

Abstract

We report a procedure to detect mid-infrared single photons at 4.65 microm by means of a two-stage scheme based on sum-frequency generation, by using a periodically poled lithium niobate nonlinear crystal and a silicon avalanche photodiode. An experimental investigation shows that, in addition to a high timing resolution, this technique yields a detection sensitivity of 1.24 pW with 63 mW of net pump power.

摘要

我们报告了一种通过基于和频产生的两阶段方案，利用周期性极化铌酸锂非线性晶体和硅雪崩光电二极管，在4.65微米波长处探测中红外单光子的方法。一项实验研究表明，除了具有高时间分辨率外，该技术在63毫瓦的净泵浦功率下产生的探测灵敏度为1.24皮瓦。