Nation, Charlie;
Notararigo, Valentina;
Olaya-Castro, Alexandra;
(2023)
Multilevel Purcell effect and the impact of vibrational modes in molecular quantum optics.
Physical Review A
, 108
(6)
, Article 063712. 10.1103/physreva.108.063712.
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Abstract
The increased decay rate of a two-level system weakly coupled to an optical cavity, known as the Purcell effect, is a cornerstone of cavity QED. However, the effect of cavity coupling is not well understood if the two-level system is replaced by a multilevel interacting system. Motivated by experiments looking to characterize molecular systems via exploiting a cavity interaction, we study a manifestation of the Purcell effect in a bio-inspired photosynthetic dimer. We focus in particular on how molecular vibrational modes, thought to play an important role in photosynthetic exciton transport, impact the system-cavity behavior in the Purcell regime. We provide a theoretical picture in terms of an effective non-Hermitian Hamiltonian, which extends the simple picture of a Jaynes-Cummings model to the description of a “multilevel” Purcell effect, where different levels have differing Purcell factors, with effective cooperativities mediated by coherent vibrational interactions.
| Type: | Article |
|---|---|
| Title: | Multilevel Purcell effect and the impact of vibrational modes in molecular quantum optics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/physreva.108.063712 |
| Publisher version: | http://dx.doi.org/10.1103/physreva.108.063712 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10185024 |
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