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Physical Review A

Dipole squeezing in the two-photon Jaynes-Cummings model with superposition state preparation

Peng Zhou, Jin Sheng Peng

Published Sep 1, 1991• 56 citations
Publisher

Abstract

Quantum fluctuations of atomic dipole variables in the two-photon Jaynes-Cummings model are discussed. It is shown that dipole squeezing can be exhibited in certain periods of time evolution of the system for superposition state preparations, and also that the dipole fluctuations cannot be squeezed in atomic spontaneous radiation processes.

DOI
10.1103/physreva.44.3331

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Quantum fluctuations of atomic dipole variables in the two-photon Jaynes-Cummings model are discussed. It is shown that dipole squeezing can be exhibited in certain periods of time evolution of the system for superposition state preparations, and also that the dipole fluctuations cannot be squeezed in atomic spontaneous radiation processes.
By means or investigating the time evolution of the atomic dipole squeezing and the field squeezing in the one-photon Jaynes-Cummings model and the nondege-nerate two-photon Jaynes-Cummings model, the relations between atomic dipole squeezing and squeezing in the radiating field are examined. The conditions under which the atom in atomic dipole squeezed state can radiate squeezed light are presented. The properties of the squeezing transformation between atomic dipole quadrature components and field quadrature components are also discussed. And in the atom-field coupling system, the two-photon transtion processes in producing squeezed light are superior to the one-photon transition processes.