Freiburg 2024 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 19: Chirality

MO 19.2: Vortrag

Donnerstag, 14. März 2024, 11:30–11:45, HS 3044

Towards perfect enantiomer-specific state transfer of chiral molecules — •Elahe Abdiha, Juhyeon Lee, Johannes Bischoff, Daniel Fontoura Barroso, Boris Sartakov, Gerard Meijer, and Sandra Eibenberger-Arias — Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany

Chiral molecules are important in many chemical and biological processes and are also at the heart of some fundamental physics questions. Recently, enantiomer-specific state transfer (ESST) was experimentally demonstrated [1,2]. Here, the application of three mutually orthogonally polarized microwave fields yields enantiomer-specific population control in a chosen quantum state that is part of a triad of rotational states. I will present our recent work on ESST, where we largely overcome the previous limitation due to initial thermal population by combining ESST with optical methods [3]. By depleting the target state using resonant UV light prior to ESST we achieve state-specific enantiomeric enrichment in the order of 50%. Importantly, we quantitatively study ESST, explicitly including the role of spatial degeneracy. I will also discuss our recent study on the influence of microwave pulse conditions on ESST [4]. Extensions to our scheme will allow to create a molecular beam with an enantiomer-pure rotational level, holding great prospects for future spectroscopic and scattering studies.

[1] Eibenberger et al, PRL 118, 123002 (2017) [2] Pérez et al, Angew. Chem. Int. Ed. 56, 12512 (2017) [3] Lee et al, PRL 128, 173001 (2022) [4] Lee et al, arxiv: 2310.11120 (2023)

Keywords: three wave mixing; chiral molecules