The Struggles of Light Bound in Matter : Modelling Optical Excitations in Nanostructures
(2021)- Abstract
- This thesis addresses three different topics on the interaction between light and matter in open quantum systems. The first topic concerns two-dimensional spectroscopy and the spectral contributions from different nonlinear action signals with a focus on how to differentiate between them. The second topic concerns the thermalization of excited electrons in hot-carrier solar cells with a focus on how to optimize the quantum efficiency of extraction.
The third topic concerns quantum heat engines with two related foci: the fundamental nature of heat and work flow in quantum thermodynamics, as well as the relation between quantum-coherent dynamics and a thermodynamic quantum advantage compared to classical model systems. The thesis... (More) - This thesis addresses three different topics on the interaction between light and matter in open quantum systems. The first topic concerns two-dimensional spectroscopy and the spectral contributions from different nonlinear action signals with a focus on how to differentiate between them. The second topic concerns the thermalization of excited electrons in hot-carrier solar cells with a focus on how to optimize the quantum efficiency of extraction.
The third topic concerns quantum heat engines with two related foci: the fundamental nature of heat and work flow in quantum thermodynamics, as well as the relation between quantum-coherent dynamics and a thermodynamic quantum advantage compared to classical model systems. The thesis comprises four papers.
In Paper I we identify the qualitative differences between the ''true'' nonlinear spectral contributions and nonlinear incoherent mixing signals.
In Paper II we model the thermalization of excited carriers in a hot-carrier solar cell and quantify the second order Coulomb scattering in the systems.
In Paper III we compare two different definitions of work and heat flow in a three-level maser and salvage the second law of thermodynamics in the conventional definitions of work and heat.
In Paper IV we investigate the advantage of a quantum model over its classical counterpart in terms of the Thermodynamic Uncertainty Relation and illustrate how the steady-state quantum coherence is insufficient to describe the nature of this advantage. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/6a513ca3-8ba5-4e96-80c0-ed34f4d7669d
- author
- Kalaee, Alex Arash Sand LU
- supervisor
- opponent
-
- Professor Segal, Dvira, University of Toronto
- organization
- publishing date
- 2021-05-03
- type
- Thesis
- publication status
- published
- subject
- keywords
- open quantum systems, nanooptics, non-equilibrium statistical mechanics, quantum thermodynamics, Fysicumarkivet A:2021:Kalaee
- edition
- 1
- pages
- 172 pages
- publisher
- Media-Tryck, Lund University, Sweden
- defense location
- Rydbergsalen, Fysiska institutionen Join via zoom: https://lu-se.zoom.us/j/62346645132?pwd=M2oyZXpuVHk0eUY4RGtaTUJRanpPUT09 passcode 2020
- defense date
- 2021-05-27 09:15:00
- ISBN
- 9789178958320
- 9789178958313
- language
- English
- LU publication?
- yes
- id
- 6a513ca3-8ba5-4e96-80c0-ed34f4d7669d
- date added to LUP
- 2021-05-03 12:16:33
- date last changed
- 2022-04-12 12:57:53
@phdthesis{6a513ca3-8ba5-4e96-80c0-ed34f4d7669d, abstract = {{This thesis addresses three different topics on the interaction between light and matter in open quantum systems. The first topic concerns two-dimensional spectroscopy and the spectral contributions from different nonlinear action signals with a focus on how to differentiate between them. The second topic concerns the thermalization of excited electrons in hot-carrier solar cells with a focus on how to optimize the quantum efficiency of extraction.<br/>The third topic concerns quantum heat engines with two related foci: the fundamental nature of heat and work flow in quantum thermodynamics, as well as the relation between quantum-coherent dynamics and a thermodynamic quantum advantage compared to classical model systems. The thesis comprises four papers.<br/><br/>In Paper I we identify the qualitative differences between the ''true'' nonlinear spectral contributions and nonlinear incoherent mixing signals.<br/><br/>In Paper II we model the thermalization of excited carriers in a hot-carrier solar cell and quantify the second order Coulomb scattering in the systems.<br/><br/>In Paper III we compare two different definitions of work and heat flow in a three-level maser and salvage the second law of thermodynamics in the conventional definitions of work and heat.<br/><br/>In Paper IV we investigate the advantage of a quantum model over its classical counterpart in terms of the Thermodynamic Uncertainty Relation and illustrate how the steady-state quantum coherence is insufficient to describe the nature of this advantage.}}, author = {{Kalaee, Alex Arash Sand}}, isbn = {{9789178958320}}, keywords = {{open quantum systems; nanooptics; non-equilibrium statistical mechanics; quantum thermodynamics; Fysicumarkivet A:2021:Kalaee}}, language = {{eng}}, month = {{05}}, publisher = {{Media-Tryck, Lund University, Sweden}}, school = {{Lund University}}, title = {{The Struggles of Light Bound in Matter : Modelling Optical Excitations in Nanostructures}}, url = {{https://lup.lub.lu.se/search/files/97407713/Alex_Arash_Sand_Kalaee_full.pdf}}, year = {{2021}}, }