Rational Pulse Design for Enantiomer-Selective Microwave Three-Wave Mixing

Microwave three-wave mixing allows for enantiomer-selective excitation of randomly oriented chiral molecules into rotational states with different energy. The random orientation of molecules is reflected in the degeneracy of the rotational spectrum with respect to the orientational quantum number &l...

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Main Authors: Monika Leibscher, Jonas Kalveram, Christiane P. Koch
Format: Article
Language:English
Published: MDPI AG 2022-04-01
Series:Symmetry
Subjects:
Online Access:https://www.mdpi.com/2073-8994/14/5/871
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author Monika Leibscher
Jonas Kalveram
Christiane P. Koch
author_facet Monika Leibscher
Jonas Kalveram
Christiane P. Koch
author_sort Monika Leibscher
collection DOAJ
description Microwave three-wave mixing allows for enantiomer-selective excitation of randomly oriented chiral molecules into rotational states with different energy. The random orientation of molecules is reflected in the degeneracy of the rotational spectrum with respect to the orientational quantum number <i>M</i> and reduces, if not accounted for, enantiomer-selectivity. Here, we show how to design pulse sequences with maximal enantiomer-selectivity from an analysis of the <i>M</i>-dependence of the Rabi frequencies associated with rotational transitions induced by resonant microwave drives. We compare different excitations schemes for rotational transitions and show that maximal enantiomer-selectivity at a given rotational temperature is achieved for synchronized three-wave mixing with circularly polarized fields.
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spelling doaj.art-59abaacda0754466a38ca1b9ebb216b92023-11-23T13:17:26ZengMDPI AGSymmetry2073-89942022-04-0114587110.3390/sym14050871Rational Pulse Design for Enantiomer-Selective Microwave Three-Wave MixingMonika Leibscher0Jonas Kalveram1Christiane P. Koch2Theoretische Physik, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, GermanyTheoretische Physik, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, GermanyTheoretische Physik, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, GermanyMicrowave three-wave mixing allows for enantiomer-selective excitation of randomly oriented chiral molecules into rotational states with different energy. The random orientation of molecules is reflected in the degeneracy of the rotational spectrum with respect to the orientational quantum number <i>M</i> and reduces, if not accounted for, enantiomer-selectivity. Here, we show how to design pulse sequences with maximal enantiomer-selectivity from an analysis of the <i>M</i>-dependence of the Rabi frequencies associated with rotational transitions induced by resonant microwave drives. We compare different excitations schemes for rotational transitions and show that maximal enantiomer-selectivity at a given rotational temperature is achieved for synchronized three-wave mixing with circularly polarized fields.https://www.mdpi.com/2073-8994/14/5/871microwave three-wave mixingchiral discriminationdegeneracy, quantum control
spellingShingle Monika Leibscher
Jonas Kalveram
Christiane P. Koch
Rational Pulse Design for Enantiomer-Selective Microwave Three-Wave Mixing
Symmetry
microwave three-wave mixing
chiral discrimination
degeneracy, quantum control
title Rational Pulse Design for Enantiomer-Selective Microwave Three-Wave Mixing
title_full Rational Pulse Design for Enantiomer-Selective Microwave Three-Wave Mixing
title_fullStr Rational Pulse Design for Enantiomer-Selective Microwave Three-Wave Mixing
title_full_unstemmed Rational Pulse Design for Enantiomer-Selective Microwave Three-Wave Mixing
title_short Rational Pulse Design for Enantiomer-Selective Microwave Three-Wave Mixing
title_sort rational pulse design for enantiomer selective microwave three wave mixing
topic microwave three-wave mixing
chiral discrimination
degeneracy, quantum control
url https://www.mdpi.com/2073-8994/14/5/871
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AT jonaskalveram rationalpulsedesignforenantiomerselectivemicrowavethreewavemixing
AT christianepkoch rationalpulsedesignforenantiomerselectivemicrowavethreewavemixing