Search results for " coherent states"

showing 4 items of 4 documents

Coherent and squeezed vibrations for discrete variable harmonic oscillators

2009

In this work we study different types of coherent and squeezed states for the Charlier, Kravchuk and Meixner oscillators. We calculate the average values of different observables corresponding to the coherent states. We found that the coherent and squeezed states of the Kravchuk oscillator are unstable. There are also coherent and squeezed states that are similar to the coherent and squeezed states of the harmonic oscillator. We have introduced a discrete variable model for the biophoton coherent radiation, and the coherent thermal and squeezed thermal states. © 2009 Taylor & Francis.

Condensed Matter::Quantum GasesQuantum opticsPhysicsObservableQuantum Physicsharmonic oscillator coherent statesAtomic and Molecular Physics and OpticsBiophotonVibrationQuantum mechanicsQuantum electrodynamicsThermalCoherent statesHarmonic oscillatorSqueezed coherent stateJournal of Modern Optics
researchProduct

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
researchProduct

Susy for non-Hermitian Hamiltonians, with a view to coherent states

2020

We propose an extended version of supersymmetric quantum mechanics which can be useful if the Hamiltonian of the physical system under investigation is not Hermitian. The method is based on the use of two, in general different, superpotentials. Bi-coherent states of the Gazeau-Klauder type are constructed and their properties are analyzed. Some examples are also discussed, including an application to the Black-Scholes equation, one of the most important equations in Finance.

PhysicsQuantum Physics010308 nuclear & particles physicsPhysical systemFOS: Physical sciencesSupersymmetic quantum mechanics Ladder operators Non self-adjoint hamiltonian Gazeau-Klauder coherent states 81SxxSupersymmetryMathematical Physics (math-ph)Type (model theory)01 natural sciencesHermitian matrixsymbols.namesakeTheoretical physicsLadder operator0103 physical sciencessymbolsCoherent statesGeometry and TopologySupersymmetric quantum mechanics010306 general physicsHamiltonian (quantum mechanics)Quantum Physics (quant-ph)Settore MAT/07 - Fisica MatematicaMathematical Physics
researchProduct

Some results on the rotated infinitely deep potential and its coherent states

2021

The Swanson model is an exactly solvable model in quantum mechanics with a manifestly non self-adjoint Hamiltonian whose eigenvalues are all real. Its eigenvectors can be deduced easily, by means of suitable ladder operators. This is because the Swanson Hamiltonian is deeply connected with that of a standard quantum Harmonic oscillator, after a suitable rotation in configuration space is performed. In this paper we consider a rotated version of a different quantum system, the infinitely deep potential, and we consider some of the consequences of this rotation. In particular, we show that differences arise with respect to the Swanson model, mainly because of the technical need of working, he…

Statistics and ProbabilityPhysicsQuantum PhysicsHilbert spaceFOS: Physical sciencesCondensed Matter Physics01 natural sciences010305 fluids & plasmassymbols.namesakeTheoretical physicsLadder operatorQuantum harmonic oscillatorDeformed quantum mechanical systems Gazeau–Klauder coherent states Orthonormal bases0103 physical sciencessymbolsQuantum systemCoherent statesConfiguration space010306 general physicsHamiltonian (quantum mechanics)Quantum Physics (quant-ph)Settore MAT/07 - Fisica MatematicaEigenvalues and eigenvectors
researchProduct