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MO: Fachverband Molekülphysik
MO 11: Poster – Polaritonic Effects in Molecular Systems (joint session MO/Q)
MO 11.3: Poster
Tuesday, March 11, 2025, 14:00–16:00, Tent
Coherent state switching using vibrational polaritons in an asymmetric double-well potential — •Loïse Attal1, Florent Calvo2, Cyril Falvo1,2, and Pascal Parneix2 — 1Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405 Orsay, France — 2Université Grenoble Alpes, CNRS, LIPhy, 38000 Grenoble, France
The quantum dynamics of vibrational polaritonic states arising from the interaction of a bistable molecule with the quantized mode of a Fabry-Perot microcavity is investigated using {a generic} asymmetric double-well potential as a simplified one-dimensional model of a reactive molecule. After discussing the role of the light-matter coupling strength in the emergence of avoided crossings between polaritonic states, we investigate the possibility of using these crossings to trigger a dynamical switching of these states from one potential well to the other. Two schemes are proposed to achieve this coherent state switching, either by preparing the molecule in an appropriate vibrational excited state before inserting it into the cavity, or by applying a short laser pulse inside the cavity to obtain a coherent superposition of polaritonic states. The respective influences of the dipole amplitude and potential asymmetry on the coherent switching process are also discussed.
Keywords: Theory; Vibrational polaritons; Vibrational dynamics; Avoided crossings