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Journal of Jilin University(Science Edition)

Radiation Squeezing of the System of the Binomial States Field Interacting with a Moving Ξ-Type Three-level Atom

Wang Xian-cai

Published Jan 1, 2006• 0 citations
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Abstract

By means of solving Schrdinger’s equation and numerical calculations, the radiation squeezing effects in the system of the binomial states field interacting with a moving Ξ-type three-level atom are discussed. The results indicate that the radiation field can show complete squeezing effects when the system parameters are selected appropriately.

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Atomic dipole squeezing effects in the field interacting with a moving Ξ-type three-level atom

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The atomic dipole squeezing effects in the system of the binomial state field interacting with a moving Ξ-type three-level atom are studied.The influences of the optical field parameter,the field-mode speed,the η parameter,and the optical field and atomic coupling coefficient on the atomic dipole squeezing effects are analyzed.The results indicate that the influence of the optical field and atomic coupling coefficient on the atomic dipole squeezing is not noticeable.When four parameters change,periodic compression of the atomic dipole appears.As the field-mode speed parameter p≥9.3,the atom dipole presents complete compression periodically.As the η paramter changes,the atomic dipole experiences three changes:starting from without changes to periodic changes,and then to without changes.

Journal of Hefei University of Technology•Jan 1, 2009•0 citations
By means of solving Schrdinger’s equation and numerical calculations, the radiation squeezing effects in the system of the binomial states field interacting with a moving Ξ-type three-level atom are discussed. The results indicate that the radiation field can show complete squeezing effects when the system parameters are selected appropriately.
By means of solving Schrdinger equation and numerical calculations,the dynamic behavior of the interaction between the single mode squeezed vacuum field and a moving Ξtype three-level atom has been studied,and the relations between the radiation squeezing effects and the coupling parameter of the system are discussed.The results of numerical calculations indicate that,the squeezed property of the radiation field is determined by the speed of the atom,and the squeezed property of the radiation field can be obviously influenced by the squeezing parameter of the system when the Ξ-type three-level atom moves with great speed.the radiation field can show complete squeezing effects when the system parameters are selected appropriately.
By means of solving the Schrodinger equation and numerical calculation,the radiation squeezing effects in the system of the coherent states field interacting with a moving-type three-level atom has been discussed.The numerical result indicates that,in the system of the coherent states field interacting with a moving-type three-level atom radiation field,mean photon number,the speed of motion atom and the field mold structure would have the certain degree of influence on the radiation squeeze.When fixed the speed of moving atom and the field mold structure,through increases the mean photon number may realize completely complete squeezing effects.Along with increment of mean photon number,there is no change in the oscillation period of the squeezing curve,but its scope increases obviously and its stability begins to reduce;when the mean photon number and the field mold structure fixed,the speed of moving atom has a great infection on the extent and period of the radiation squeeze.With the speed of moving atom increasing,not only the complete squeezing effect would be archived,the stability would also enhance.
The radiation squeezing effect in the interaction process between the single mode squeezed vacuum field and a moving two-level atom is studied by means of solving the Schrdinger equation and numerical calculations.The results are as follows: with the increasing of the atom's speed and the parameter of field model structure,the time evolution curve rises noticeably;with the rising of the probability breadth of the atom ground state,the squeezing depth of the radiation field increases,otherwise it decreases,even there is no squeeze;the phase angle effects the time evolution curve's change like the probability breadth of the atom ground state;during the process that the compression factor becomes larger,the radiation field can not squeeze firstly,then it squeezes partially,finally the squeeze gradually disappears.
The atomic dipole squeezing effects in the system of the binomial state field interacting with a moving Ξ-type three-level atom are studied.The influences of the optical field parameter,the field-mode speed,the η parameter,and the optical field and atomic coupling coefficient on the atomic dipole squeezing effects are analyzed.The results indicate that the influence of the optical field and atomic coupling coefficient on the atomic dipole squeezing is not noticeable.When four parameters change,periodic compression of the atomic dipole appears.As the field-mode speed parameter p≥9.3,the atom dipole presents complete compression periodically.As the η paramter changes,the atomic dipole experiences three changes:starting from without changes to periodic changes,and then to without changes.