0000000000599877

AUTHOR

Stephen M. Barnett

showing 3 related works from this author

Journeys from quantum optics to quantum technology

2017

Sir Peter Knight is a pioneer in quantum optics which has now grown to an important branch of modern physics to study the foundations and applications of quantum physics. He is leading an effort to develop new technologies from quantum mechanics. In this collection of essays, we recall the time we were working with him as a postdoc or a PhD student and look at how the time with him has influenced our research.

EngineeringTechnologyAtomic and Molecular Physics and OpticEmerging technologiesQuantum technologiesTRAPPED IONQuantum physicsSINGLE-ATOM0205 Optical PhysicsPhysics - History and Philosophy of PhysicsNONCLASSICAL MOTIONAL STATESFOS: Physical sciences01 natural sciences010305 fluids & plasmasTheoretical physicsQC350Engineering0202 Atomic Molecular Nuclear Particle And Plasma Physics0103 physical sciencesPERIODIC LEVEL-CROSSINGSStatistical and Nonlinear Physics; Electronic Optical and Magnetic Materials; Atomic and Molecular Physics and Optics; Electrical and Electronic EngineeringHistory and Philosophy of Physics (physics.hist-ph)ULTRAFAST MOLECULAR-DYNAMICSElectrical and Electronic Engineering010306 general physicsQCQuantum opticsScience & Technologybusiness.industryElectronic Optical and Magnetic MaterialModern physics0906 Electrical And Electronic EngineeringINDUCED ELECTRON-DIFFRACTIONStatistical and Nonlinear PhysicsEngineering Electrical & ElectronicOpticsModern physicsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsQuantum technologyQuantum theoryINDUCED CONTINUUM STRUCTUREHIGH-HARMONIC-GENERATIONENTANGLED COHERENT STATESQuantum Physics (quant-ph)businessBAND SQUEEZED VACUUMStatistical and Nonlinear Physic
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Frictional quantum decoherence

2007

The dynamics associated with a measurement-based master equation for quantum Brownian motion are investigated. A scheme for obtaining time evolution from general initial conditions is derived. This is applied to analyze dissipation and decoherence in the evolution of both a Gaussian and a Schr\"{o}dinger cat initial state. Dependence on the diffusive terms present in the master equation is discussed with reference to both the coordinate and momentum representations.

Statistics and ProbabilityPhysicsQuantum PhysicsQuantum decoherenceGaussianTime evolutionGeneral Physics and AstronomyFOS: Physical sciencesStatistical and Nonlinear PhysicsDissipationMomentumsymbols.namesakeClassical mechanicsModeling and SimulationMaster equationsymbolsQuantum Physics (quant-ph)QuantumMathematical PhysicsBrownian motion
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Dissipation and decoherence in Brownian motion

2007

We consider the evolution of a Brownian particle described by a measurement-based master equation. We derive the solution to this equation for general initial conditions and apply it to a Gaussian initial state. We analyse the effects of the diffusive terms, present in the master equation, and describe how these modify uncertainties and coherence length. This allows us to model dissipation and decoherence in quantum Brownian motion.

PhysicsHistoryGeometric Brownian motionFractional Brownian motionBrownian excursionHeavy traffic approximationComputer Science ApplicationsEducationClassical mechanicsReflected Brownian motionDiffusion processMaster equationFokker–Planck equationStatistical physicsJournal of Physics: Conference Series
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