Quantum interferometric two-photon excitation spectroscopy

Abstract Two-photon excitation spectroscopy is a nonlinear technique that has gained rapidly in interest and significance for studying the complex energy-level structure and transition probabilities of materials. While the conventional spectroscopy based on tunable classical light has been long esta...

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Bibliographic Details
Published in:New journal of physics 2022-11, Vol.24 (11), p.113014
Main Authors: Chen, Yuanyuan, León-Montiel, Roberto de J, Chen, Lixiang
Format: Article
Language:English
Subjects:
Electronic structure
Excitation spectra
Fourier transforms
Interferometry
N00N-state interferometry
Photons
Physics
quantum spectroscopy
Spectral resolution
Spectroscopy
Spectrum analysis
Transition probabilities
two-photon excitation
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Summary:Abstract Two-photon excitation spectroscopy is a nonlinear technique that has gained rapidly in interest and significance for studying the complex energy-level structure and transition probabilities of materials. While the conventional spectroscopy based on tunable classical light has been long established, quantum light provides an alternative way towards excitation spectroscopy with potential advantages in temporal and spectral resolution, as well as reduced photon fluxes. By using a quantum Fourier transform that connects the sum-frequency intensity and N00N-state temporal interference, we present an approach for quantum interferometric two-photon excitation spectroscopy. Our proposed protocol overcomes the difficulties of engineering two-photon joint spectral intensities and fine-tuned absorption-frequency selection. These results may significantly facilitate the use of quantum interferometric spectroscopy for extracting the information about the electronic structure of the two-photon excited-state manifold of atoms or molecules without any requirement for precise and complicated scanning in the spectral domain. This may be particularly relevant for photon-sensitive biological and chemical samples.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ac9d5d