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Polariton-Mediated Electron Transfer via Cavity Quantum Electrodynamics.
Arkajit Mandal1, Todd D Krauss1, Pengfei Huo1
1Department of Chemistry, University of Rochester, 120 Trustee Road, Rochester, New York 14627, United States.
The Journal of Physical Chemistry. B
|June 27, 2020
Summary
Quantum light-matter interactions in optical cavities can control electron transfer reactions. This study shows how polariton formation enhances or suppresses charge transfer, offering new avenues for chemical reaction control.
Area of Science:
- Quantum Chemistry
- Physical Chemistry
- Spectroscopy
Background:
- Electron transfer reactions are fundamental in chemistry and biology.
- Controlling reaction rates via external fields is a key challenge.
- Quantum electrodynamics (QED) offers a framework to study light-matter interactions.
Purpose of the Study:
- To investigate polariton-mediated electron transfer reactions.
- To demonstrate control over photoinduced charge transfer using optical cavities.
- To explore the role of quantum light-matter interactions in chemical reactions.
Main Methods:
- Analytic rate constant theory.
- Direct quantum dynamical simulations.
- Modeling molecular systems coupled to quantized radiation fields in optical cavities.
Main Results:
- Photoinduced charge transfer can be significantly enhanced or suppressed by cavity coupling.
- Quantum light-matter interactions tune the effective driving force and electronic couplings.
- Effective couplings can be extended to dark states via combined electronic and light-matter coupling.
Conclusions:
- Polariton formation provides a mechanism to control electron transfer rates.
- Resonance and detuning conditions offer tunable control over reaction dynamics.
- Counter-rotating terms and dipole self-energy are crucial in the ultrastrong coupling regime.
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