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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Non-Abelian Quantum Transport and Thermosqueezing Effects

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Manzano, Gonzalo [1, 2] ; Parrondo, Juan M. R. [3, 4] ; Landi, Gabriel T. [5]
Total Authors: 3
[1] UIB, Inst Cross Disciplinary Phys & Complex Syst IFISC, CSIC, Campus Univ Illes Balears, E-07122 Palma De Mallorca - Spain
[2] Austrian Acad Sci, Lnstitute Quantum Opt & Quantum Informat IQOQI, Boltzmanngasse 3, A-1090 Vienna - Austria
[3] Univ Complutense Madrid, Dept Estruct La Mat Fis Term & Elect, E-28040 Madrid - Spain
[4] Univ Complutense Madrid, GISC, E-28040 Madrid - Spain
[5] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo - Brazil
Total Affiliations: 5
Document type: Journal article
Source: PRX QUANTUM; v. 3, n. 1 JAN 6 2022.
Web of Science Citations: 0

Modern quantum experiments provide examples of transport with noncommuting quantities, offering a tool to understand the interplay between thermal and quantum effects. Here we set forth a theory for nonAbelian transport in the linear response regime. Our key insight is to use generalized Gibbs ensembles with noncommuting charges as the basic building blocks and strict charge-preserving unitaries in a collisional setup. The linear response framework is then built using a collisional model between two reservoirs. We show that the transport coefficients obey Onsager reciprocity. Moreover, we find that quantum coherence, associated with the noncommutativity, acts so as to reduce the net entropy production, when compared to the case of commuting transport. This therefore provides a clear connection between quantum coherent transport and dissipation. As an example, we study heat and squeezing fluxes in bosonic systems, characterizing a set of thermosqueezing coefficients with potential applications in metrology and heat-to-work conversion in the quantum regime. (AU)

FAPESP's process: 17/07973-5 - Thermodynamics and information technologies with continuous variable quantum systems
Grantee:Gabriel Teixeira Landi
Support Opportunities: Regular Research Grants
FAPESP's process: 18/12813-0 - Quantum thermodynamics of bosonic systems
Grantee:Gabriel Teixeira Landi
Support Opportunities: Regular Research Grants
FAPESP's process: 17/50304-7 - Entropy production in non-equilibrium quantum processes: from foundations to quantum technologies
Grantee:Gabriel Teixeira Landi
Support Opportunities: Regular Research Grants