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arXiv · 2409.05332

Tuning the terahertz response of liquids by creating polar many-body excitations

Gerard McCaul·Matthias Runge·Michael Woerner·Diyar Talbayev·Thomas Elsaesser·Denys I. Bondar
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Abstract

A surprising result from the theory of quantum control is the degree to which the properties of a physical system can be manipulated. Both atomic and many-body solid state models admit the possibility of creating a 'driven imposter', in which the optical response of one material mimics that of a dynamically distinct system. Here we apply these techniques to polarons in polar liquids. Such quasiparticles describe solvated electrons interacting with many-body degrees of freedom of their environment. The polaron frequency, which depends on the electron concentration in the liquid, is controlled with a pump field, rendering the polaron frequency of three different liquids identical. The experiments demonstrate the feasibility of 'polar impostorons', a so far purely theoretical phenomenon.

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Gerard McCaul, Matthias Runge, Michael Woerner, Diyar Talbayev, Thomas Elsaesser, Denys I. Bondar. 2024-09-09. Tuning the terahertz response of liquids by creating polar many-body excitations. https://doi.org/10.1103/qbqx-zcsx

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