Search results for "input-output formalism."

showing 3 items of 3 documents

Quantum collision models: Open system dynamics from repeated interactions

2022

We present an extensive introduction to quantum collision models (CMs), also known as repeated interactions schemes: a class of microscopic system-bath models for investigating open quantum systems dynamics whose use is currently spreading in a number of research areas. Through dedicated sections and a pedagogical approach, we discuss the CMs definition and general properties, their use for the derivation of master equations, their connection with quantum trajectories, their application in non-equilibrium quantum thermodynamics, their non-Markovian generalizations, their emergence from conventional system-bath microscopic models and link to the input-output formalism. The state of the art o…

Quantum non-Markovian dynamicsQuantum PhysicsQuantum opticsQuantum weak measurementsInput–output formalismFOS: Physical sciencesGeneral Physics and AstronomyRepeated interactionsSettore FIS/03 - Fisica Della MateriaOpen quantum systemsQuantum trajectoriesCascaded master equations; Input-output formalism; Open quantum systems; Quantum non-Markovian dynamics; Quantum optics; Quantum thermodynamics; Quantum trajectories; Quantum weak measurements; Repeated interactionsCascaded master equationsQuantum Physics (quant-ph)Quantum thermodynamicsPhysics Reports
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Collision models in quantum optics

2017

AbstractQuantum collision models (CMs) provide advantageous case studies for investigating major issues in open quantum systems theory, and especially quantum non-Markovianity. After reviewing their general definition and distinctive features, we illustrate the emergence of a CM in a familiar quantum optics scenario. This task is carried out by highlighting the close connection between the well-known input-output formalism and CMs. Within this quantum optics framework, usual assumptions in the CMs’ literature - such as considering a bath of noninteracting yet initially correlated ancillas - have a clear physical origin.

Quantum opticsTechnologyQuantum PhysicsCollision models; quantum non-Markovian dynamics; input-output formalism.Formalism (philosophy)Computer scienceTFOS: Physical sciencesCollision modelCollision01 natural sciences010305 fluids & plasmasquantum non-Markovian dynamicTheoretical physicsquantum non-markovian dynamicsSystems theorycollision models0103 physical sciencesinput-output formalismConnection (algebraic framework)input-output formalism.010306 general physicsQuantum Physics (quant-ph)Quantum
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Nonlinear dissipation phenomena in optomechanics

2016

Yksikään kvanttisysteemi ei voi olla täysin eristetty ympäristöstään, mikä johtaa informaation välittymiseen systeemin ja ympäristön välillä. Optomekaniikassa, missä tyypillinen tutkittava systeemi on peileistä koostuva optinen kaviteetti yhdistettynä mekaaniseen värähtelijään, systeemin ja ympäristön lineaarisesta kytkennästä johtuvat dissipaatioilmiöt ovat hyvin tunnettuja. Epälineaarisia ilmiöitä ei kuitenkaan ymmärretä yhtä laajasti. Tutkin epälineaarista kytkentää kaviteetin ja lämpökylvyn välillä ja havainnollistan tästä kytkennästä johtuvia ilmiöitä kuten epälineaarista dissipaatiota. Esitän myös optisen kaviteetin epälineaarisen dissipaation oikeuttavan mallin, missä optinen kavitee…

nonlinear dissipationoptomekaniikkaSchrieffer-Wolff transformationkvanttisysteemitopen quantum systemsinput-output formalismMaster equationoptomechanics
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