AI 中文总结
研究利用未检测光子实现远程红外吸收光谱法，通过检测近红外辐射重建中红外光谱，借助光子对与泵浦激光共传播，在室外大气中达43.4米传输距离，检测到丁烷和甲烷，首次用于大气测量。
AI 中文摘要
我们展示了一种用于远程开放路径傅里叶变换红外光谱的新方法，该方法利用未检测光子。与之前的量子光谱研究类似，通过仅检测近红外辐射来重建中红外光谱，绕过了红外探测器的重要限制。本研究依赖于光子对和泵浦激光在同一光路中共传播，这使得能够远距离探测开放大气。我们在室外大气中实现了高达43.4米的前所未有的光子传输距离，检测到了开放路径中释放的丁烷以及天然大气中的甲烷，首次证明了利用未检测光子的红外光谱进行大气测量。
英文摘要
We demonstrate a novel method for remote open-path Fourier-transform infrared spectroscopy with undetected photons. Similar to previous quantum spectroscopy works, a mid-infrared spectrum is reconstructed by detecting a near-infrared radiation only, thus bypassing important limitations of infrared detectors. Our study however relies on the co-propagation of the photon-pair and the pump-laser over the same optical path, which allows the probing of the open atmosphere over long distances. By sending the photons over unprecedented distances of up-to 43.4m in the outdoor atmosphere, we were able to detect butane released in the open-path, as well as natural atmospheric methane, thus demonstrating the first use of infrared spectroscopy with undetected photons for atmospheric measurements.
Comments21 pages, 10 figures
