0000000000002075

AUTHOR

Gheorghe Drăgănescu

showing 2 related works from this author

Unitary Representations of Quantum Superpositions of two Coherent States and beyond

2013

The construction of a class of unitary operators generating linear superpositions of generalized coherent states from the ground state of a quantum harmonic oscillator is reported. Such a construction, based on the properties of a new ad hoc introduced set of hermitian operators, leads to the definition of new basis in the oscillator Hilbert space, extending in a natural way the displaced Fock states basis. The potential development of our method and our results are briefly outlined.

Statistics and ProbabilityQuantum PhysicsBasis (linear algebra)Hilbert spaceFOS: Physical sciencesStatistical and Nonlinear PhysicsUnitary stateFock spacesymbols.namesakeOptical phase spaceTheoretical physicsQuantum harmonic oscillatorQuantum mechanicssymbolsCoherent statesQuantum Physics (quant-ph)Mathematical PhysicsMathematicsSqueezed coherent state
researchProduct

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