ArticleNature communications2025
Single-photon dual-comb ghost imaging spectroscopy.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
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Abstract
Single-photon spectroscopy utilizing single-pixel binary detectors, often statistically recovers "high-dimension" spectral information from "low-dimension" photon-counting signals with ultra-high sensitivity. Nevertheless, it has been a significantly long-standing challenge to achieve either high-speed or high-resolution spectral measurements under photon-deficient scenarios. This study proposes single-photon dual-comb ghost imaging spectroscopy (DC-GIS), which utilizes a mode-resolved dual-comb matrix to interrogate the sample and directly calculates the high-resolution spectrum from photon-counting signals in milliseconds through ghost-imaging method. The concept of single-photon DC-GIS has been examined by measuring the vib-rotational transitions of acetylene with a resolution of 125 MHz and a measurement time of 6.4 ms, and ultra-long distance (125 km) fiber sensing based on phase-shifted fiber Bragg grating with an ultra-high sensitivity of 0.5 με with femtowatt-level power per comb line. This approach brings the high-speed and high-resolution spectroscopy to the cutting-edge research of photon-scarce scenarios.
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