Nonlinear quantum Langevin equations for bosonic modes in solid-state systems
| Autor: | Juuso Manninen, Francesco Massel, Souvik Agasti |
|---|---|
| Přispěvatelé: | Quantum Circuits and Correlations, University of Jyväskylä, Department of Applied Physics, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
FOS: Physical sciences
02 engineering and technology 01 natural sciences Open quantum system Quantum mechanics 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Point (geometry) 010306 general physics Quantum Optomechanics Parametric statistics Physics Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics ta114 Dissipation 021001 nanoscience & nanotechnology Nonlinear system Coupling (physics) solid-state systems Classical mechanics 0210 nano-technology Quantum Physics (quant-ph) Langevin equations Physics - Optics Optics (physics.optics) |
| Zdroj: | Physical Review A. 96(6) |
| ISSN: | 2469-9926 |
| DOI: | 10.1103/PhysRevA.96.063830 |
| Popis: | 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, modelling 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. Comment: 10 pages, 5 figures |
| Databáze: | OpenAIRE |
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