Pseudomode treatment of strong-coupling quantum thermodynamics Article Swipe
Francesco Albarelli
,
Bassano Vacchini
,
Andrea Smirne
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2407.17886
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2407.17886
The treatment of quantum thermodynamic systems beyond weak coupling is of increasing relevance, yet extremely challenging. The evaluation of thermodynamic quantities in strong-coupling regimes requires a nonperturbative knowledge of the bath dynamics, which in turn relies on heavy numerical simulations. To tame these difficulties, considering thermal bosonic baths linearly coupled to the open system, we derive expressions for heat, work, and average system-bath interaction energy that only involve the autocorrelation function of the bath and two-time expectation values of system operators. We then exploit the pseudomode approach, which replaces the physical continuous bosonic bath with a small finite number of damped, possibly interacting, modes, to numerically evaluate these relevant thermodynamic quantities. We show in particular that this method allows for an efficient numerical evaluation of thermodynamic quantities in terms of one-time expectation values of the open system and the pseudomodes. We apply this framework to the investigation of two paradigmatic situations. In the first instance, we study the entropy production for a two-level system coupled to an ohmic bath, simulated via interacting pseudomodes, allowing for the presence of time-dependent driving. Secondly, we consider a quantum thermal machine composed of a two-level system interacting with two thermal baths at different temperatures, showing that an appropriate sinusoidal modulation of the coupling with the cold bath only is enough to obtain work extraction.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- http://arxiv.org/abs/2407.17886
- https://arxiv.org/pdf/2407.17886
- OA Status
- green
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4402618811
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4402618811Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2407.17886Digital Object Identifier
- Title
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Pseudomode treatment of strong-coupling quantum thermodynamicsWork title
- Type
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preprintOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
-
2024-07-25Full publication date if available
- Authors
-
Francesco Albarelli, Bassano Vacchini, Andrea SmirneList of authors in order
- Landing page
-
https://arxiv.org/abs/2407.17886Publisher landing page
- PDF URL
-
https://arxiv.org/pdf/2407.17886Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
-
https://arxiv.org/pdf/2407.17886Direct OA link when available
- Concepts
-
Quantum thermodynamics, Quantum, Coupling (piping), Thermodynamics, Physics, Statistical physics, Quantum mechanics, Theoretical physics, Materials science, MetallurgyTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
0Total citation count in OpenAlex
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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