Generation of multi-mode squeezed vacuum using pulse pumped fiber optical parametric amplifiers
Generation of multi-mode squeezed vacuum using pulse pumped fiber optical parametric amplifiers
复制标题
使用脉冲泵浦光纤参量放大器产生多模压缩真空
DOI：
10.1364/oe.24.002125
复制
发表时间：
2016
期刊：
影响因子：
3.8
通讯作者：
Lei Yang
中科院分区：
文献类型：
--
作者：
Nannan Liu;Yuhong Liu;Jiamin Li;Lei Yang
多模压缩态是量子信息处理和连续变量量子计量学的重要资源。本文介绍了用锁模超快脉冲序列泵浦色散位移光纤实现简并四波混频的实验结果。噪声波动小于散粒噪声限值1.1±0.08分贝(经检测损失校正后为1.95±0.17分贝)。详细的研究表明，通过抑制拉曼散射和重塑本机振荡器的光谱以实现零差探测系统所需的模式匹配，可以进一步改善结果。我们的研究对多模压缩真空紧凑型光纤光源的研制具有一定的参考价值
Multimode squeezed states are essential resources in quantum information processing and quantum metrology with continuous variables. Here we present the experimental generation of squeezed vacuum via the degenerate four wave mixing realized by pumping a piece of dispersion shifted fiber with mode-locked ultrafast pulse trains. The noise fluctuation is lower than the shot noise limit by 1.1±0.08 dB (1.95±0.17 dB after correction for detection losses). The detailed investigation illustrates that the results can be further improved by suppressing Raman scattering and by reshaping the spectrum of the local oscillator to achieve the required mode-matching of the homodyne detection system. Our study is useful for developing a compact fiber source of multi-mode squeezed vacuum