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Journal of Yunnan Normal University

Anti-bunching effect of the field in the system of two coupling two-level-atoms interacting with coherent state field.

Lu Dao

Published Jan 1, 2007• 0 citations
OpenAlex

Abstract

The anti-bunching effect of the field in interaction of two coupling two-level-atoms with coherent state is studied.Using T-C model,the influence of coupling constant between atoms on anti-bunching effect of the field is studied.The results obtained using the numerical method show that with increasing of coupling constant between atoms,anti-bunching effect of the field is getting weaker.

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The anti-bunching effect of the field in interaction of two coupling two-level-atoms with coherent state is studied.Using T-C model,the influence of coupling constant between atoms on anti-bunching effect of the field is studied.The results obtained using the numerical method show that with increasing of coupling constant between atoms,anti-bunching effect of the field is getting weaker.
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Anti-bunching effect of the field in the system of a two-mode field initially in an SU(2) coherent state resonantly interacting with a three-level Λ-type atom are investigated by means of quantum theory and nu-merical calculations.The dependence of the anti-bunching effect on the total photon of the tow-mode,the parti-tion parameter,the coupling constant and the atomic initial state is discussed for two cases:(1) no state-selective atomic measurement;(2) direct state-selective atomic measurement.The results indicate: the anti-bunching effect of the two mode of the field exhibits when the two coupling coefficients are the same;a mode anti-bunching ef-fect is distinctly enhanced when the atom is initially on the lower level or direct state-selective measurement is performed on the atom;the anti-bunching effect of the two mode of the field is distinctly enhanced when the to-tal photon number of the two-mode is decreased;the anti-bunching effect of the field does not change over time when the two coupling coefficients are the same and the state-selective measurement is performed on the atom.
Anti-bunching effect of the light field in the system of a two-mode field initially in an SU(2) coherent state resonantly interacting with a three-level V-type atom are investigated by numerical calculations.The influences of the selective atomic measurement,the total photon of the tow-mode,the partition parameter,the coupling constant and the atomic initial state on the anti-bunching effect of the light field is discussed.The results indicate: the a mode anti-bunching effect is distinctly enhanced when the state-selective measurement is performed on the atom or the atom is initially on the lower level;the anti-bunching effect of the field does not change over time when the tow coupling constants are same and the direct state-selective measurement is performed on the atom;the anti-bunching effect of the two mode of the field is distinctly enhanced when the total photon number of the two-mode is decreased.