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Journal of Anqing Teachers College

Atomic Functor Squeezing of the System of Optical Field Interacting with Moving Two—Level Atom

Wang Xian-cai

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

By means of solving the Schr(o|¨)dinger equation and numerical calculation,the atomic functor squeezing effect in the system of the coherent states field interacting with moving two—level atom is discussed.The result of numerical calculations indicates that the atomic operator may realize complete squeezing effect through choosing some suitable system parameters.

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Journal of Atomic and Molecular Physics•Jan 1, 2008•0 citations
By means of solving the Schr(o|¨)dinger equation and numerical calculation,the atomic functor squeezing effect in the system of the coherent states field interacting with moving two—level atom is discussed.The result of numerical calculations indicates that the atomic operator may realize complete squeezing effect through choosing some suitable system parameters.
The light squeezing effects in the system of two identical two-level atoms in the Bell state interacting with the two-mode entangled coherent states field are investigated by means of Schrdinger equation solution and numerical calculations.The results show that light squeezing effects not only depends on the mean photon numbers and atomic initial state but also the degree of entanglement of the two-mode entangled coherent state optics field,whereas the coupling between two atoms does not affect the light squeezing effects.The light squeezing effects does not appear for a special kind of Bell state |β11〉,however there can appear the light squeezing effects under some conditions for the other three Bell states.
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.
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.
In this article,the atomic dipole squeezing effects in the system of three identical two-level entangled atoms interacting with the coherent states field are investigated by mean of Schrdinger equation solution and numerical calculations.The results show that the time evolution of the atomic dipole squeezing parameters depends on the degree of entanglement of the entangled atoms and the intensity of the coherent field.The atomic dipole squeezing parameter decreases with the increasing of the degree of entanglement.