Quantum dynamics of a planar rotor driven by suddenly switched combined aligning and orienting interactions

We investigate, both analytically and numerically, the quantum dynamics of a planar (2D) rigid rotor subject to suddenly switched-on or switched-off concurrent orienting and aligning interactions. We find that the time-evolution of the post-switch populations as well as of the expectation values of...

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Bibliographic Details
Published inNew journal of physics Vol. 23; no. 6; pp. 63040 - 63055
Main Authors Mirahmadi, Marjan, Schmidt, Burkhard, Friedrich, Bretislav
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2021
Subjects
analytic solutions
non-adiabatic dynamics
orientation and alignment
Physics
planar pendulum
planar rotor
Quantum theory
Rigid rotors
Rotor dynamics
Topology
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ISSN1367-2630
1367-2630
DOI10.1088/1367-2630/ac00d6

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Summary:We investigate, both analytically and numerically, the quantum dynamics of a planar (2D) rigid rotor subject to suddenly switched-on or switched-off concurrent orienting and aligning interactions. We find that the time-evolution of the post-switch populations as well as of the expectation values of orientation and alignment reflects the spectral properties and the eigensurface topology of the planar pendulum eigenproblem established in our earlier work (2014 Front. Phys. 2 37, 2017 Eur. Phys. J. D 71 149). This finding opens the possibility to examine the topological properties of the eigensurfaces experimentally as well as provides the means to make use of these properties for controlling the rotor dynamics in the laboratory.
Bibliography:NJP-113181.R1
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ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ac00d6