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arXiv · 2109.15302

Enantiosensitive steering of free-induction decay

Margarita Khokhlova·Emilio Pisanty·Serguei Patchkovskii·Olga Smirnova·Misha Ivanov
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Abstract

Chiral discrimination, a problem of vital importance, has recently become an emerging frontier in ultrafast physics, with remarkable progress achieved in multiphoton and strong-field regimes. Rydberg excitations, unavoidable in the strong-field regime and intentional for few-photon processes, arise in all these approaches. Here we show how to harness this ubiquitous feature by introducing a new phenomenon, enantiosensitive free-induction decay, steered by a tricolour chiral field at a gentle intensity, structured in space and time. We demonstrate theoretically that an excited chiral molecule accumulates an enantiosensitive phase due to perturbative interactions with the tricolour chiral field, resulting in a spatial phase gradient steering the free-induction decay in opposite directions for opposite enantiomers. Our work introduces a general, extremely sensitive, all-optical, enantiosensitive detection technique which avoids strong fields and takes full advantage of recent advances in structuring light.

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Margarita Khokhlova, Emilio Pisanty, Serguei Patchkovskii, Olga Smirnova, Misha Ivanov. 2021-09-30. Enantiosensitive steering of free-induction decay. https://doi.org/10.1126/sciadv.abq1962

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