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Energy transfer and correlations in cavity-embedded donor-acceptor configurations
Michael Reitz1, Francesca Mineo1, Claudiu Genes2
1Max Planck Institute for the Science of Light, Staudtstraße 2, D-91058, Erlangen, Germany.
Scientific Reports
|June 15, 2018
Summary
We explored how micro-cavities control energy transfer between quantum emitters. Collective interactions modify energy transfer rates, revealing optimal energy flow and entanglement in cavity-coupled systems.
Area of Science:
- Quantum optics
- Condensed matter physics
- Photochemistry
Background:
- Energy transfer rates in donor-acceptor systems are crucial for many physical and chemical processes.
- Micro-cavities can confine electromagnetic fields, influencing light-matter interactions and energy transfer dynamics.
Purpose of the Study:
- To analyze the competition between short-range dipole-dipole interactions and long-range cavity-mediated interactions in donor-acceptor systems.
- To investigate how collective incoherent interactions modify energy transfer scaling with distance.
- To elucidate optimal energy flow and quantify entanglement in strong coupling regimes.
Main Methods:
- Modeling effective two-level quantum emitters interacting with micro-cavity modes.
- Analyzing free-space and cavity-mediated collective incoherent interactions.
- Quantifying quantum correlations using two-qubit concurrence.
Main Results:
- Collective interactions, both in free space and within cavities, alter traditional distance-dependent energy transfer scaling.
- In the weak-coupling, strong-cooperativity regime, cavity-mediated interactions significantly impact energy transfer.
- An optimal energy flow regime was identified in the strong coupling regime, characterized by equal donor/acceptor Hopfield coefficients in the middle polariton.
Conclusions:
- Micro-cavities offer a powerful tool to manipulate energy transfer rates in quantum emitter systems.
- Understanding collective interactions is key to controlling energy flow and harnessing quantum phenomena like entanglement for applications.
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