Volume 216, 2019

Transient synchronisation and quantum coherence in a bio-inspired vibronic dimer

Abstract

Synchronisation is a collective phenomenon widely investigated in classical oscillators and, more recently, in quantum systems. However it remains unclear what features distinguish synchronous behaviour in these two scenarios. Recent works have shown that investigating synchronisation dynamics in open quantum systems can give insight into this issue. Here we study transient synchronisation in a bio-inspired vibronic dimer, where electronic excitation dynamics is mediated by coherent interactions with intramolecular vibrational modes. We show that the synchronisation dynamics of local mode displacements exhibit a rich behaviour which arises directly from the distinct time-evolutions of different vibronic quantum coherences. Furthermore, our study shows that coherent energy transport in this bio-inspired system is concomitant with the emergence of positive synchronisation between mode displacements. Our work provides further understanding of the relations between quantum coherence and synchronisation in open quantum systems and suggests an interesting role for coherence in biomolecules, that of promoting synchronisation of vibrational motions driven out of thermal equilibrium.

Graphical abstract: Transient synchronisation and quantum coherence in a bio-inspired vibronic dimer

Associated articles

Article information

Article type
Paper
Submitted
13 ጃንዩ 2019
Accepted
17 ጃንዩ 2019
First published
18 ጃንዩ 2019

Faraday Discuss., 2019,216, 38-56

Transient synchronisation and quantum coherence in a bio-inspired vibronic dimer

S. Siwiak-Jaszek and A. Olaya-Castro, Faraday Discuss., 2019, 216, 38 DOI: 10.1039/C9FD00006B

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