ArticleScience advances2025
Enantiospecific two-photon electric-dipole selection rule of chiral molecules.
Article in Science advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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3 authors.
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Abstract
Distinguishing between enantiomers is crucial in chemistry and pharmacology. Existing optical methods rely on enantiospecific three-photon electric-dipole transitions, requiring phase locking, three-photon resonance, and precise beam control, limiting their practicality. Here, we propose an optical method that eliminates these constraints by applying a static electric field, which breaks a symmetry combining rotation and time reversal, leading to distinct two-photon selection rules for enantiomers. This enables selective excitation of a target enantiomer using two beams without phase locking or intensity control, greatly improving the feasibility of optical enantiomer differentiation.
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