Quantum thermalization via multiwave mixing

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2024-10-24

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Department of Applied Physics

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en

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5

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PHYSICAL REVIEW RESEARCH, Volume 6, issue 4, pp. 1-5

Abstract

We discuss thermalization in a multimode quantum cavity under unitary evolution. According to general principles, an isolated system with quadratic couplings does not exhibit thermalization. However, we find that nonlinearities, here three-wave perturbation, typical for instance in superconducting Josephson systems, may lead to thermalization into a Bose-Einstein distribution of occupations of the modes. The temperature of this state is dictated by energy conservation in this closed system, and the thermal distribution is robust against weak disturbances. We discuss how our findings open up new avenues to experimentally probe fundamental assumptions of statistical physics in solid-state systems.

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Publisher Copyright: © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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DOI

10.1103/PhysRevResearch.6.L042023

Citation

Pekola, J P & Karimi, B 2024, ' Quantum thermalization via multiwave mixing ', PHYSICAL REVIEW RESEARCH, vol. 6, no. 4, L042023, pp. 1-5 . https://doi.org/10.1103/PhysRevResearch.6.L042023

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https://urn.fi/URN:NBN:fi:aalto-202411137110

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[article-cris] Perustieteiden korkeakoulu / SCI