典型文献
Mid-infrared single-photon upconversion spectroscopy based on temporal-spectral quantum correlation
文献摘要：
Promoting the sensitivity of mid-infrared(MIR)spectroscopy to the single-photon level is a critical need for investigating photosensitive biological samples and chemical reactions.MIR spectroscopy based on frequency upconversion is a compelling pioneer allowing high-efficiency MIR spectral measurement with well-developed single-photon detectors,which overcomes the main limitations of high thermal noise of current MIR detectors.However,noise from other nonlinear processes caused by strong pump fields hinders the development of the upconversion-based MIR spectroscopy to reach the single-photon level.Here,a broadband MIR single-photon frequency upconversion spectroscopy is demonstrated based on the temporal-spectral quantum correlation of non-degenerate photon pairs,which is well preserved in the frequency upconversion process and is fully used in extracting the signals from tremendous noise caused by the strong pump.A correlation spectrum broader than 660 nm is achieved and applied for the demonstration of sample identification under a low incident photon flux of 0.09 average photons per pulse.The system is featured with non-destructive and robust operation,which makes single-photon-level MIR spectroscopy an appealing option in biochemical applications.
文献关键词：
中图分类号：
作者姓名：
YUJIE CAI;YU CHEN;XIAONING XIN;KUN HUANG;E Wu
作者机构：
State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China;Chongqing Key Laboratory of Precision Optics,Chongqing Institute of East China Normal University,Chongqing 401120,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China
文献出处：
引用格式：
[1]YUJIE CAI;YU CHEN;XIAONING XIN;KUN HUANG;E Wu-.Mid-infrared single-photon upconversion spectroscopy based on temporal-spectral quantum correlation)[J].光子学研究（英文）,2022(11):2614-2621
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AB值：
0.51061
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