6533b823fe1ef96bd127ecdd
RESEARCH PRODUCT
Nonlinear quantum Langevin equations for bosonic modes in solid-state systems
Juuso ManninenFrancesco MasselSouvik Agastisubject
FOS: Physical sciences02 engineering and technology01 natural sciencesOpen quantum systemQuantum mechanics0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)Point (geometry)010306 general physicsQuantumOptomechanicsParametric statisticsPhysicsQuantum PhysicsCondensed Matter - Mesoscale and Nanoscale Physicsta114Dissipation021001 nanoscience & nanotechnologyNonlinear systemCoupling (physics)solid-state systemsClassical mechanics0210 nano-technologyQuantum Physics (quant-ph)Langevin equationsPhysics - OpticsOptics (physics.optics)description
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-12-20 | Physical Review A |