Entangled photons enabled ultrafast stimulated Raman spectroscopy for molecular dynamics.

Autor: Fan JJ; Department of Physics, City University of Hong Kong, Kowloon, Hong Kong SAR, China., Ou ZY; Department of Physics, City University of Hong Kong, Kowloon, Hong Kong SAR, China. jeffou@cityu.edu.hk., Zhang Z; Department of Physics, City University of Hong Kong, Kowloon, Hong Kong SAR, China. zzhan26@cityu.edu.hk.; City University of Hong Kong, Shenzhen Research Institute, Shenzhen, Guangdong, China. zzhan26@cityu.edu.hk.
Jazyk: angličtina
Zdroj: Light, science & applications [Light Sci Appl] 2024 Jul 15; Vol. 13 (1), pp. 163. Date of Electronic Publication: 2024 Jul 15.
DOI: 10.1038/s41377-024-01492-4
Abstrakt: Quantum entanglement has emerged as a great resource for studying the interactions between molecules and radiation. We propose a new scheme of stimulated Raman scattering with entangled photons. A quantum ultrafast Raman spectroscopy is developed for condensed-phase molecules, to monitor the exciton populations and coherences. Analytic results are obtained, showing an entanglement-enabled time-frequency scale not attainable by classical light. The Raman signal presents an unprecedented selectivity of molecular correlation functions, as a result of the Hong-Ou-Mandel interference. Our work suggests a new paradigm of using an unconventional interferometer as part of spectroscopy, with the potential to unveil advanced information about complex materials.
(© 2024. The Author(s).)
Databáze: MEDLINE
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