Enhancing Spectroscopy and Microscopy with Emerging Methods in Photon-Correlation and Quantum Illumination

• URL: http://arxiv.org/abs/2507.21356v1
• Date: Mon, 28 Jul 2025 21:54:58 GMT
• Title: Enhancing Spectroscopy and Microscopy with Emerging Methods in Photon-Correlation and Quantum Illumination
• Authors: Chieh Tsao, Haonan Ling, Alex Hinkle, Yifan Chen, Keshav Kumar Jha, Zhen-Li Yan, Hendrik Utzat,
• Abstract summary: We highlight rapid progress in the field driven by advances in single-photon detectors and quantum light sources.<n>We emphasize emerging applications in super-resolution microscopy, measurements below classical noise limits, and photon-number-resolved spectroscopy.<n>We conclude by outlining key technological challenges and future opportunities across materials science and bio-nanophotonics.
• Score: 1.8258139829288476
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum optics has driven major advances in our ability to generate and detect correlations between individual photons. Its principles are now increasingly translated into nanoscale characterization techniques, enhancing spectroscopy, microscopy, and metrology. In this Review, we highlight rapid progress in the field driven by advances in single-photon detectors and quantum light sources, including time-resolved single-photon counting cameras, superconducting nanowire detectors, and increasingly bright sources of entangled photons. We emphasize emerging applications in super-resolution microscopy, measurements below classical noise limits, and photon-number-resolved spectroscopy-a powerful paradigm for probing nanoscale electronic materials and molecular dynamics. We conclude by outlining key technological challenges and future opportunities across materials science and bio-nanophotonics.

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