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Langevin Approach to Quantum Optics with Molecules
Michael Reitz1, Christian Sommer1, Claudiu Genes1
1Max Planck Institute for the Science of Light, Staudtstraße 2, D-91058 Erlangen, Germany.
Physical Review Letters
|June 8, 2019
Summary
This study explores light-molecule interactions using quantum Langevin equations. It provides analytical insights into molecular emission, energy transfer, and cavity effects for quantum optics applications.
Area of Science:
- Quantum Optics
- Molecular Spectroscopy
- Condensed Matter Physics
Background:
- Understanding light-matter interactions is crucial for quantum technologies.
- Molecular systems exhibit complex dynamics due to coupling with vibrational modes.
- Quantum Langevin equations offer a powerful framework for analyzing open quantum systems.
Purpose of the Study:
- To investigate the interaction between light and quantum emitters coupled to vibrational modes.
- To derive analytical expressions for molecular optical properties and energy transfer.
- To explore phenomena in the Purcell and strong coupling regimes.
Main Methods:
- Utilizing a quantum Langevin equations approach.
- Analytical derivation of absorption and fluorescence profiles.
- Modeling Holstein-type interactions between emitters and vibrational modes.
Main Results:
- Analytical expressions for modified radiative emission branching ratios in the Purcell regime.
- Characterization of asymmetric cavity transmission due to dissipative crosstalk in strong coupling.
- Analysis of Förster resonance energy transfer (FRET) mediated by vacuum or cavity modes.
Conclusions:
- The quantum Langevin approach provides a versatile tool for analyzing light-molecule interactions.
- This work offers insights into controlling molecular emission and energy transfer in optical cavities.
- The findings are relevant for designing quantum devices and understanding molecular dynamics.
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