ArticleProceedings of the National Academy of Sciences of the United States of America2023
Quantum interferometry and pathway selectivity in the nonlinear response of photosynthetic excitons.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 10 citations in OpenAlex.
- Two-dimensional fluorescence spectroscopy with entangled photons and time- and frequency-resolved two-photon coincidence detection.Science advances · 2026Article
- Multi-Dimensional Spectroscopy with Intense Entangled Beams: Entanglement-Enabled Phase Matching in a Collinear Beam Geometry.The journal of physical chemistry letters · 2025Article
- The Quantum Information Science Challenge for Chemistry.The journal of physical chemistry letters · 2025Review
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4 authors at 2 institutions in 1 country.
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Abstract
We propose a time-frequency resolved spectroscopic technique which employs nonlinear interferometers to study exciton-exciton scattering in molecular aggregates. A higher degree of control over the contributing Liouville pathways is obtained as compared to classical light. We show how the nonlinear response can be isolated from the orders-of-magnitude stronger linear background by either phase matching or polarization filtering. Both arise due to averaging the signal over a large number of noninteracting, randomly oriented molecules. We apply our technique to the Frenkel exciton model which excludes charge separation for the photosystem II reaction center. We show how the sum of the entangled photon frequencies can be used to select two-exciton resonances, while their delay times reveal the single-exciton levels involved in the optical process.
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