ArticleScience advances2021
Distinguishability and "which pathway" information in multidimensional interferometric spectroscopy with a single entangled photon-pair.
Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 0 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
- Femtosecond spectroscopy with paired single photons: Emulating a double-slit experiment in the time-frequency domain.Science advances · 2025Article
- Colors of entangled two-photon absorption.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Sensing ultrashort electronic coherent beating at conical intersections by single-electron pulses.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
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Abstract
Correlated photons inspire abundance of metrology-related platforms, which benefit from quantum (anti-) correlations and outperform their classical counterparts. While these mainly focus on entanglement, the role of photon exchange phase and degree of distinguishability has not been widely used in quantum applications. Using an interferometric setup, we theoretically show that, when a two-photon wave function is coupled to matter, it is encoded with “which pathway?” information even at low-degree of entanglement. An interferometric protocol, which enables phase-sensitive discrimination between microscopic interaction histories (pathways), is developed. We find that quantum light interferometry facilitates utterly different set of time delay variables, which are unbound by uncertainty to the inverse bandwidth of the wave packet. We illustrate our findings on an exciton model system and demonstrate how to probe intraband dephasing in the time domain without temporally resolved detection. The unusual scaling of multiphoton coincidence signals with the applied pump intensity is discussed.
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Registered trials
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