Experimental Access to Mode-Specific Coupling between Quantum Molecular Vibrations and Classical Bath Modes.

ABSTRACT: The interaction of quantum-mechanical systems with a fluctuating thermal environment (bath) is fundamental to molecular mechanics and energy transport/dissipation. Its complete picture requires mode-specific measurements of this interaction and an understanding of its nature. Here, we present a combined experimental and theoretical study providing detailed insights into the coupling between a high-frequency vibrational two-level system and thermally excited terahertz modes. Experimentally, two-dimensional terahertz-infrared-visible spectroscopy reports directly on the coupling between quantum oscillators represented by CH₃ streching vibrations in liquid dimethyl sulfoxide and distinct low-frequency modes. Theoretically, we present a mixed quantum-classical formalism of the sampl

SUBMITTER: Seliya P 

PROVIDER: S-EPMC10544034 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature