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Abstract
When an optical emitter is strongly coupled to a vibrational bath the polaron transformation is often used to permit an accurate second-order Redfield master equation. However, the optical transition rates in the polaron frame are not analytic and approximations typically need to be made, which result in the loss of anything other than simple additive effects of the two baths. In this paper, we derive an intuitive analytic expression for the polaron frame optical transition rates by means of a finite-mode truncation of the vibrational bath. Using this technique, calculations of the transition rates converge for only a few modes in the truncated spectral density, and capture nonadditive effects such as population inversion of a two-level system.
Original language | English |
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Article number | 014302 |
Number of pages | 11 |
Journal | Physical Review B |
Volume | 105 |
Issue number | 1 |
DOIs | |
Publication status | Published - 7 Jan 2022 |
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Dive into the research topics of 'Analytic expression for the optical exciton transition rates in the polaron frame'. Together they form a unique fingerprint.Projects
- 2 Finished
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Understanding and engineering: Understanding and engineering dissipation in nanoscale quantum devices
Lovett, B. W. (PI) & Keeling, J. M. J. (CoI)
1/04/20 → 31/03/23
Project: Standard
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CM DTC 2014 - 2022: EPSRC centre for doctoral training in condensed matter physics: Renewal of the CM-DTC
King, P. (PI)
1/08/14 → 31/01/24
Project: Standard
Datasets
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Dataset and Mathematica notebook for: Analytic expression for the optical exciton transition rates in the polaron frame
Rouse, D. M. (Creator), Lovett, B. W. (Owner) & Gauger, E. (Owner), University of St Andrews, 21 Feb 2022
DOI: 10.17630/689881b3-5953-42f8-9e7e-a333a98d8ae8
Dataset
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