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Nonlinear quantum Langevin equations for bosonic modes in solid-state systems

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Manninen, J., Agasti, S., & Massel, F. (2017). Nonlinear quantum Langevin equations for bosonic modes in solid-state systems. Physical Review A, 96(6), Article 063830. https://doi.org/10.1103/PhysRevA.96.063830
Published in
Physical Review A
Authors
Manninen, Juuso |
Agasti, Souvik |
Massel, Francesco
Date
2017
Discipline
Nanoscience CenterFysiikkaNanoscience CenterPhysics
Copyright
© 2017 American Physical Society. Published in this repository with the kind permission of the publisher.

 
Based on the experimental evidence that impurities contribute to the dissipation properties of solid-state open quantum systems, we provide here a description in terms of nonlinear quantum Langevin equations of the role played by two-level systems in the dynamics of a bosonic degree of freedom. Our starting point is represented by the description of the system-environment coupling in terms of coupling to two separate reservoirs, modeling the interaction with external bosonic modes and two-level systems, respectively. Furthermore, we show how this model represents a specific example of a class of open quantum systems that can be described by nonlinear quantum Langevin equations. Our analysis offers a potential explanation of the parametric effects recently observed in circuit-QED cavity optomechanics experiments.
Publisher
American Physical Society
ISSN Search the Publication Forum
2469-9926
Keywords
Langevin equations solid-state systems
DOI
https://doi.org/10.1103/PhysRevA.96.063830
URI

http://urn.fi/URN:NBN:fi:jyu-201801041050

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/27818250

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  • Matemaattis-luonnontieteellinen tiedekunta [4594]
Additional information about funding
This work was supported by the Academy of Finland(Contract No. 275245) and the European Research Council(Grant No. 670743).

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