Characterizing the functional role of quantum coherence in energy transfer

• URL: http://arxiv.org/abs/2606.13404v1
• Date: Thu, 11 Jun 2026 14:33:32 GMT
• Title: Characterizing the functional role of quantum coherence in energy transfer
• Abstract summary: Quantum coherence is understood to play a role in excitation energy transfer in open quantum systems.<n>We characterize and quantify the impact of coherence in the eigenenergy basis on a generalized rate of energy transfer.
• Score: 45.88028371034407
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum coherence is understood to play a role in excitation energy transfer in open quantum systems, yet a quantitative approach to assessing its influence on the transfer process is still missing. Using Nakajima-Zwanzig projection operators, we derive a general memory kernel identity that enables us to characterize and quantify the impact of coherence in the eigenenergy basis on a generalized rate of energy transfer. Applying our approach to the electronic dynamics of a dimer coupled to a structured phonon bath, we demonstrate how quantum coherence acts to modulate energy transfer.

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