A1 Journal article (refereed)
Nonlinear quantum Langevin equations for bosonic modes in solid-state systems (2017)
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
JYU authors or editors
Publication details
All authors or editors: Manninen, Juuso; Agasti, Souvik; Massel, Francesco
Journal or series: Physical Review A
ISSN: 2469-9926
eISSN: 2469-9934
Publication year: 2017
Volume: 96
Issue number: 6
Article number: 063830
Publisher: American Physical Society
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1103/PhysRevA.96.063830
Publication open access: Openly available
Publication channel open access: Open Access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/56755
Web address where publication is available: https://arxiv.org/abs/1711.00424
Abstract
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.
Free keywords: Langevin equations; solid-state systems
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2017
JUFO rating: 2