The unexpected imprints of the tug of war between quantum coherence and environmental noises on the efficiency at the maximum power of a molecular photocell.

Subhajit Sarkar, Yonatan Dubi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The molecular photocell, i.e., a single-molecule donor-acceptor complex placed between two external leads, besides being technologically important, is a paradigmatic example of a many-body system operating in strong nonequilibrium. There exist parameter regimes where an intricate interplay between environmental noise and quantum coherence effectively increases the efficiency of the transport process, a phenomenon, known as, ``environment assisted quantum transport,'' or ENAQT in short. We discuss, within the set-up of a molecular photocell, that while a single environment can assist quantum transport, the combined effect of more than one type of environment can, quite counterintuitively, hamper the transport efficiency over a broad parameter regime. The efficiency at maximum power provides clear signatures of such surprising behaviors. Our findings are verifiable given recent advances in the experimental ability. S.S. acknowledges the financial support provided through a Kreitman postdoctoral fellowship. This research was supported in part by the Israel Science Foundation (ISF) Grant No. 1360/17.
Original languageEnglish
Title of host publicationAPS March Meeting 2021
PagesX10-006
StatePublished - 2021

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