Search results for "Quasiprobability distribution"

showing 2 items of 2 documents

Time-energy filtering of single electrons in ballistic waveguides

2019

Characterizing distinct electron wave packets is a basic task for solid-state electron quantum optics with applications in quantum metrology and sensing. A important circuit element for this task is a non-stationary potential barrier than enables backscattering of chiral particles depending on their energy and time of arrival. Here we solve the quantum mechanical problem of single-particle scattering by a ballistic constriction in an fully depleted quantum Hall system under spatially uniform but time-dependent electrostatic potential modulation. The result describes electrons distributed in time-energy space according to a modified Wigner quasiprobability distribution and scattered with an …

PhysicsQuantum opticsCondensed Matter - Mesoscale and Nanoscale PhysicsWigner quasiprobability distributionWave packet500 Naturwissenschaften und Mathematik::530 Physik::530 PhysikGeneral Physics and AstronomyFOS: Physical sciencesElectronQuantum tomographyQuantum Hall effect01 natural sciences530010305 fluids & plasmasComputational physicsquantum state tomography0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)time-dependent scatteringQuantum metrologyWigner distribution functionelectron quantum optics010306 general physicssingle-electron devices
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Quantum light depolarization: the phase-space perspective

2008

Quantum light depolarization is handled through a master equation obtained by coupling dispersively the field to a randomly distributed atomic reservoir. This master equation is solved by transforming it into a quasiprobability distribution in phase space and the quasiclassical limit is investigated.

Quasiprobability distributionPhysicsHusimi Q representationQuantum PhysicsLindblad equationWigner quasiprobability distributionQuantum limitFOS: Physical sciencesQUANTUM LIGHT DEPOLARIZATION OPEN QUANTUM SYSTEMAtomic and Molecular Physics and OpticsOpen quantum systemQuantum mechanicsQuantum electrodynamicsPhase spaceMaster equationQuantum Physics (quant-ph)
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