Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Springer theses

Performance of Autonomous Quantum Thermal Machines

Gonzalo Manzano Paule

Published Jan 1, 2018• 0 citations
Publisher
DOI
10.1007/978-3-319-93964-3_11

Related papers

Operational diagnosis of an autonomous quantum thermal machine via non-markovianity and heat currents

Y. Khlifi, K. El Anouz, Abderrahim El Allati

Optics & Laser Technology•Apr 4, 2026•0 citations

Effect of non-energetic coherence in the bath on the performance of quantum thermal machines

Xiao-Ming Li, Zhong‐Xiao Man, Yun‐Jie Xia

Physica A Statistical Mechanics and its Applications•Nov 15, 2025•2 citations

The impact of coherence in non-equilibrium reservoirs on the functionality and performance of quantum thermal machines

Zhi-Chu Chen, Qingyu Cai, Ji-Yong Fu +1 more

Chinese Journal of Physics•Dec 27, 2025•0 citations

Quantum Thermal Machines

Paolo Andrea Erdman

•Nov 1, 2020•0 citations

Performance of autonomous quantum thermal machines: Hilbert space dimension as a thermodynamical resource

Ralph Silva, Gonzalo Manzano, Paul Skrzypczyk +1 more

Multilevel autonomous quantum thermal machines are discussed. In particular, we explore the relationship between the size of the machine (captured by Hilbert space dimension) and the performance of the machine. Using the concepts of virtual qubits and virtual temperatures, we show that higher dimensional machines can outperform smaller ones. For instance, by considering refrigerators with more levels, lower temperatures can be achieved, as well as higher power. We discuss the optimal design for refrigerators of a given dimension. As a consequence we obtain a statement of the third law in terms of Hilbert space dimension: Reaching absolute zero temperature requires infinite dimension. These results demonstrate that Hilbert space dimension should be considered a thermodynamic resource.

arXiv:1604.04098•Physical review. E•Sep 16, 2016•76 citations

Strong system-bath coupling reshapes characteristics of quantum thermal machines

Felix Ivander, Nicholas Anto-Sztrikacs, Dvira Segal

We study the performance of quantum absorption refrigerators, paradigmatic autonomous quantum thermal machines, and reveal central impacts of strong couplings between the working system and the thermal baths. Using the reaction coordinate quantum master equation method, which treats system-bath interactions beyond weak coupling, we discover that reshaping of the window of performance is a central outcome of strong system-bath couplings. This alteration of the cooling window stems from the dominant role of parameter renormalization at strong couplings. We further show that strong coupling admits direct transport pathways between the thermal reservoirs. Such beyond-second-order transport mechanisms are typically detrimental to the performance of quantum thermal machines. Our study reveals that it is inadequate to claim for either a suppression or an enhancement of the cooling performance at strong coupling when analyzed against a single parameter and in a limited domain. Rather, a comprehensive approach should be adopted so as to uncover the reshaping of the operation window.

arXiv:2111.05302•Nov 9, 2021•3 citations
Multilevel autonomous quantum thermal machines are discussed. In particular, we explore the relationship between the size of the machine (captured by Hilbert space dimension) and the performance of the machine. Using the concepts of virtual qubits and virtual temperatures, we show that higher dimensional machines can outperform smaller ones. For instance, by considering refrigerators with more levels, lower temperatures can be achieved, as well as higher power. We discuss the optimal design for refrigerators of a given dimension. As a consequence we obtain a statement of the third law in terms of Hilbert space dimension: Reaching absolute zero temperature requires infinite dimension. These results demonstrate that Hilbert space dimension should be considered a thermodynamic resource.
We study the performance of quantum absorption refrigerators, paradigmatic autonomous quantum thermal machines, and reveal central impacts of strong couplings between the working system and the thermal baths. Using the reaction coordinate quantum master equation method, which treats system-bath interactions beyond weak coupling, we discover that reshaping of the window of performance is a central outcome of strong system-bath couplings. This alteration of the cooling window stems from the dominant role of parameter renormalization at strong couplings. We further show that strong coupling admits direct transport pathways between the thermal reservoirs. Such beyond-second-order transport mechanisms are typically detrimental to the performance of quantum thermal machines. Our study reveals that it is inadequate to claim for either a suppression or an enhancement of the cooling performance at strong coupling when analyzed against a single parameter and in a limited domain. Rather, a comprehensive approach should be adopted so as to uncover the reshaping of the operation window.