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arXiv · 1802.00648

Energy transfer and correlations in cavity-embedded donor-acceptor configurations

Michael Reitz·Francesca Mineo·Claudiu Genes
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Abstract

The rate of energy transfer in donor-acceptor systems can be manipulated via the common interaction with the confined electromagnetic modes of a micro-cavity. We analyze the competition between the near-field short range dipole-dipole energy exchange processes and the cavity mediated long-range interactions in a simplified model consisting of effective two-level quantum emitters that could be relevant for molecules in experiments under cryogenic conditions. We find that free-space collective incoherent interactions, typically associated with sub- and superradiance, can modify the traditional resonant energy transfer scaling with distance. The same holds true for cavity-mediated collective incoherent interactions in a weak-coupling but strong-cooperativity regime. In the strong coupling regime, we elucidate the effect of pumping into cavity polaritons and analytically identify an optimal energy flow regime characterized by equal donor/acceptor Hopfield coefficients in the middle polariton. Finally we quantify the build-up of quantum correlations in the donor-acceptor system via the two-qubit concurrence as a measure of entanglement.

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Michael Reitz, Francesca Mineo, Claudiu Genes. 2018-02-02. Energy transfer and correlations in cavity-embedded donor-acceptor configurations. https://doi.org/10.1038/s41598-018-27396-z

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