Chinese Journal of Quantum Electronics

Mean photon number evolution of two coupling two-level atoms interacting with squeezed light field

Liu Su-mei

Published Jan 1, 2005• 0 citations

Abstract

The photon statistical evolution in the process of two coupling two-level atoms interacting with the squeezed coherent state light field is investigated by means of the interacting picture and the quantum theory. Meanwhile, the influence of the squeezed light field factor γ, the coherent vibration amplitude |α|2 of the field-atom, the coupling constant g of two atoms and the coupling constant λ of atom-field on the mean photon number n(t) of stimulated field are also discussed. The relations of them are revealed.

Related papers

Photon Statistical Evolution of Two Coupling Atoms Interacting with Squeezed Coherent Field

Liu San-qiu

In this paper, the photon statistical evolution in the system of two coupling two-level atoms interacting with squeezed coherent-state field is studied by the interacting picture by means of quantum theory. The influence of field squeezing parameter, coherent-amplitude heft, coupling coefficient between atom and field and coupling coefficient between atoms on the mean-photon number has been discussed. Meanwhile, the relation of them is also revealed.

Journal of Jiangxi Normal UniversityJan 1, 20040 citations

Photon Statistical Evolution of two Coupling Atoms Interacting With a Squeezed Coherent-State Light-Field in a Kerr Medium

Dongying Zhang, Liu San-qiu

The photon statistical evolution in the system of the coupling two-level atoms interacting with squeezed coherent state light-field in a Kerr medium is studied by means of the quantum theory and in the interacting picture. Meanwhile, the influence of Kerr medium, the light coherent vibration amplitude, squeezing factor and the coupling coefficient between atoms on the photon statistical properties of the system is also discussed.

Jiangxi kexueJan 1, 20040 citations

Mean photon number evolution of entangled atoms interacting with coherent state light-filed in T-C model

Guojun Liu

We study a couple of entangled two-level atoms interacting with one model coherent state light-filed by means of the quantum theory in interacting picture.The mean photon number evolution of entangled atoms interacting with coherent state light-filed is given.Meanwhile,the influence of the coherent vibration amplitude |α|2 of the field-atom,the coupling constant g of atom-field,the coupling constant e of two atoms and the entanglement factor cos θ of two atoms on the mean photon number 〈n(t)〉 of light-field are also discussed.We find that mean value of mean photon number evolution and the cycle of system quantum collapse-and-revival will change when the coherent vibration amplitude of the field-atom,the coupling constant of atom-field and the coupling constant of two atoms change.The variation of entanglement factor will not affect on the cycle of system quantum collapse-and-revival,while it could vary the value of mean photon number slowly.

Journal of Atomic and Molecular PhysicsJan 1, 20070 citations

Photon Statistical Evolution in the Interaction System of Two Coupling Atoms with Squeezed Vacuum Field via Two-Photon Transition in Kerr Medium

Huiyong He

The time evolution of the average photon number in the interaction system of two coupling atoms with squeezed vacuum field via two-photon transition in Kerr medium are studied by means of quantum theory. The influences of the Kerr medium and field coupling constant and the dipole-dipole interaction between atoms on the average photon number are discussed.

Journal of Changsha University of Science & TechnologyJan 1, 20050 citations

Non-classical Properties of the System of the V-type Atom Interacting with a Squeezed Field in Kerr Medium

Liu Su-mei

The photon statistical evolution vs.time in the system of V-type atom interacting with squeezed coherent light field inside a high Q cavity field with a Kerr medium was investigated by means of the quantum theory.It has been shown that:the Kerr medium and the coupling parameters λ of the light field-atom will influence the periodicity of the evolution of the mean photon number,And Kerr medium meke the connected degree between field and atoms weaken.Meanwhile,the coherent vibration amplitude ｜α｜~2 and the squeezed light field factors γ also influence the periodicity of the evolution of the mean photon number;the connected degree between field and atoms is strengthen first and is weaken later when ｜α｜~2 and γ increase.

Journal of Optoelectronics·laserJan 1, 20040 citations

Quantum entanglement in a system of squeezed coherent state light field interacting with two entangled atoms

Caihua Zhang, Sachuerfu, Gerile

The quantum entanglement of two entangled atoms interacting with the squeezed coherent state is studied by means of full quantum theory. The influences of coherent amplitude factor, squeezing factor, ratio of two coupling coefficients on the entanglement property are discussed. The results show that two atoms entanglement evolution property is opposed to atom-field entanglement evolution property when the coherent amplitude factor was zero or small. The interaction of the atoms and field weakens the entanglement degree of atom-atom. With increasing coherent amplitude factor or decreasing squeezing factor of light, the time of two atoms staying in the steady entangled state becomes longer. The increase of the coherent amplitude factor or the decrease of squeezing factor of light lead to the increase of atom-atom entanglement degree while the decrease of atoms-field entanglement degree. Moreover, the two-atom quantum state stays in the maximum entangled state when the atomic dipole-dipole coupling coefficient is large enough.

Chinese Journal of Quantum ElectronicsJan 1, 20100 citations