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MO: Fachverband Molekülphysik
MO 3: Chiral Molecules
MO 3.1: Hauptvortrag
Montag, 9. März 2020, 14:00–14:30, f102
Enantio-selective controllability of asymmetric top molecules — •Monika Leibscher1, Eugenio Pozzoli2, Mario Sigalotti2, Ugo Boscain3, and Christiane P. Koch4,1 — 1Theoretische Physik, Universität Kassel, Kassel, Germany — 2Inria, Sorbonne Université, Université de Paris, CNRS, Laboratoire Jacques-Louis Lions, Paris, France — 3CNRS, Sorbonne Université, Inria, Université de Paris, Laboratoire Jacques-Louis Lions, Paris, France — 4Theoretische Physik, Freie Universität Berlin, Berlin, Germany
Three-wave mixing (3WM) spectroscopy of chiral molecules allows for enantio-selective population transfer despite random orientation of the molecules [1]. Three-wave mixing is usually regarded as a three-state process [2]. However, due to the M-degeneracy of the rotational spectrum, the underlying rotational dynamics is far more complex and the usual 3WM schemes do not reach complete selectivity. To investigate the prospects of complete enantio-selective population transfer in systems with degenerate states, we extend a recent controllability analysis of symmetric rotors [3] and introduce the concept of enantio-selective controllability. Our analysis shows that an asymmetric top is enantio-selective controllable despite the M-degeneracy. Moreover, we demonstrate that 3WM schemes [2] have to be extended to at least five different microwave pulses to achieve complete separation of the enantiomers. [1] D. Patterson, M. Schnell, and J. M. Doyle, Nature 497, 475 (2013). [2] M. Leibscher, T. F. Giesen, C. P. Koch, J. Chem. Phys. 151, 014302 (2019). [3] U. Boscain, E. Pozzoli, M. Sigalotti, arXiv:1910.01924 (2019).