Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Atomic and Molecular Physics

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

Guojun Liu

Published Jan 1, 2007• 0 citations
OpenAlex

Abstract

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.

Related papers

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

Liu Su-mei

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.

Chinese Journal of Quantum Electronics•Jan 1, 2005•0 citations

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 University•Jan 1, 2004•0 citations

The Time-evolution of the Atomic Population in the System of Atoms in Bell States Interacting with Two-mode Entangled Coherent Field

Zhuo‐Liang Cao

The time-evolution of atomic population of a light-atoms interaction system,two atoms in Bell states Interacting with two-mode entangled coherent field,are investigated by means of quantum thoery and numerical method.The effect of the atomic initial state,mean photon numbers of field,the degree of the entanglment for the entangled coherent fields,and the coupling strength of dipole-dipole interaction between atoms on the atom's population are discussed by numerical calculation.The results show that the atomic population is time-independent provided that the atom is in |β11〉 state.For the other three Bell states,there will appear the periodical collapse-revival of the atomic population if the initial mean photon number reaches some special value.With the increase of the initial mean photon number,the oscillation frequency of the time-evolution of atomic population increases correspondingly,and the amplitude decreases.The revival period of the atomic population for the initial states |β00〉 and |β10〉 is twice of that for the initial state |β01〉.The degree of entanglement of the two-mode entangled coherent field and the intensity of two dipole-dipole interaction between atoms have no effects on the frequency of the Rabi oscillation,but have obvious effects on the amplitude of the oscillation.

Acta Sinica Quantum Optica•Jan 1, 2007•0 citations

Evolution of Atomic Population in System of Two-mode Entangled Coherent Field Interacting with Atoms in Bell States in Kerr Medium

Zhuo‐Liang Cao

The time evolution of atomic population of the system, where the two identical two-level atoms in Bell states interact with two-mode entangled coherent field in a cavity filled with the Kerr medium, was investigated by means of quantum theory and numerical method. The effects of the atomic initial state, mean photon numbers of field, the degree of the entanglement for the entangled coherent field, and the coupling strength between the Kerr medium and field on the atom’s population are discussed via numerical calculations. The results show that the atomic population is time-independent provided that the atoms are in β11〉 state. For the other three Bell states, there will appear the periodical collapse-revival of atomic population if the initial mean photon number reaches some special values. With the increase of the initial mean photon number, the oscillation frequency of the time-evolution of atomic population increases correspondingly, and the amplitude decreases. The degree of the entanglement of the two-mode entangled coherent field has no effect on the frequency of the Rabi oscillation, but has an obvious effect on the amplitude of Rabi oscillation. When the coupling strength between the Kerr medium and field reaches some special values, it has the obvious effects on the cycle of collapse-revival of atomic population, the frequency and the amplitude of Rabi oscillation.

Journal of Jilin University(Science Edition)•Jan 1, 2007•0 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 kexue•Jan 1, 2004•0 citations

Dynamical properties in the system of two identical two-level entangled atoms interacting with coherent state

Song Jun, Zhuo‐Liang Cao

In this article,the time evolution properties of the field entropy in the system of the two identical two-level entangled atoms interacting with the single-mode coherent light field are studied by means of full quantum theory.The influences of the initial states and the degree of entanglement of two identical two-level entangled atoms and the intensity of the light field on the field entropy are discussed by numerical calculations.The results show that the average value and the oscillation frequency of the field entropy increases with the increasing of the mean photon number,the oscillation of the field entropy presents stated periods in the weak light field and presents collapses and revivals in the increased light field,the amplitudes of field entropy increase with increasing initial degree of entanglement of two entangled atoms.

Chinese journal of atomic and molecular physics•Jan 1, 2004•0 citations
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.
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.
The time-evolution of atomic population of a light-atoms interaction system,two atoms in Bell states Interacting with two-mode entangled coherent field,are investigated by means of quantum thoery and numerical method.The effect of the atomic initial state,mean photon numbers of field,the degree of the entanglment for the entangled coherent fields,and the coupling strength of dipole-dipole interaction between atoms on the atom's population are discussed by numerical calculation.The results show that the atomic population is time-independent provided that the atom is in |β11〉 state.For the other three Bell states,there will appear the periodical collapse-revival of the atomic population if the initial mean photon number reaches some special value.With the increase of the initial mean photon number,the oscillation frequency of the time-evolution of atomic population increases correspondingly,and the amplitude decreases.The revival period of the atomic population for the initial states |β00〉 and |β10〉 is twice of that for the initial state |β01〉.The degree of entanglement of the two-mode entangled coherent field and the intensity of two dipole-dipole interaction between atoms have no effects on the frequency of the Rabi oscillation,but have obvious effects on the amplitude of the oscillation.
The time evolution of atomic population of the system, where the two identical two-level atoms in Bell states interact with two-mode entangled coherent field in a cavity filled with the Kerr medium, was investigated by means of quantum theory and numerical method. The effects of the atomic initial state, mean photon numbers of field, the degree of the entanglement for the entangled coherent field, and the coupling strength between the Kerr medium and field on the atom’s population are discussed via numerical calculations. The results show that the atomic population is time-independent provided that the atoms are in β11〉 state. For the other three Bell states, there will appear the periodical collapse-revival of atomic population if the initial mean photon number reaches some special values. With the increase of the initial mean photon number, the oscillation frequency of the time-evolution of atomic population increases correspondingly, and the amplitude decreases. The degree of the entanglement of the two-mode entangled coherent field has no effect on the frequency of the Rabi oscillation, but has an obvious effect on the amplitude of Rabi oscillation. When the coupling strength between the Kerr medium and field reaches some special values, it has the obvious effects on the cycle of collapse-revival of atomic population, the frequency and the amplitude of Rabi oscillation.
In this article,the time evolution properties of the field entropy in the system of the two identical two-level entangled atoms interacting with the single-mode coherent light field are studied by means of full quantum theory.The influences of the initial states and the degree of entanglement of two identical two-level entangled atoms and the intensity of the light field on the field entropy are discussed by numerical calculations.The results show that the average value and the oscillation frequency of the field entropy increases with the increasing of the mean photon number,the oscillation of the field entropy presents stated periods in the weak light field and presents collapses and revivals in the increased light field,the amplitudes of field entropy increase with increasing initial degree of entanglement of two entangled atoms.