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

Acta Physica Sinica

Evolution of atom and field linear entropies

Zhao Jie, Guo Hong, (1)华中师范大学物理科学与技术学院,武汉 430079; (2)华中师范大学物理科学与技术学院,武汉 430079;长江大学物理科学与技术学院,荆州 434001

Published Jan 1, 2007• 3 citations
Publisher

Abstract

The atom and field linear entropies of a two-level atom interacting with gray-body field are investigated. The effect of the atomic initial state, detuning, intensity of the incident field, absorptivity of the cavity and temperature of the system on the atom and field linear entropies are dicussed.
DOI
10.7498/aps.56.2647

Related papers

Evolution of the entropy of a two-mode field interacting with a casade three-lev el atom system

Zhang Li-Hui, Gao‐xiang Li, Gan Zhong-Wei +1 more

Considering the larger detuning approximation and the effect of phase damping of cavity field,we have studied the time evolution of the linear entropies for the atom-field system,the field and the atom in the system of a cascade three-level atom interacting with a two-mode field.The effects of ac Stark shifts and initial states of the cavity field on all the linear entropies are analyzed.

Acta Physica Sinica•Jan 1, 2003•4 citations

Linear Entropies of a Cascade Three-level Atom Interacting with One-mode Photon Field

Gao‐xiang Li

In this paper we study the dynamics of a three-level atom interacting with one-mode photon field, The time evolution of atomic linear entropies of field-atom coupling system is investigated. The effects of field's initial state and detuning on atomic linear entropies are discussed.

Acta Sinica Quantum Optica•Jan 1, 2005•0 citations

Linear entropy evolution in a dissipative system of two atoms and cavity field

Xiong Yang, Zhao-Yang Tong, Shao-Hua Xiang +1 more

Some investigations have been made on the evolution of the linear entropies of atom-field system, in which two identical two-level atoms simultaneously interact with a single-mode dissipative cavity field under large detuning. The effects of the initial atom states and the dissipative factors of the cavity on all linear entropies are also discussed. The results show that the influence of the cavity decay constant on different kinds of Bell states is completely different, and the state |Ψ〉12 is a robust entangled state against the decoherence while the state |Φ〉12 is a fragile entangled state.

Acta Physica Sinica•Jan 1, 2007•1 citation

Atomic Linear Entropies of a Cascade Three-level Atom Interacting with Two-mode Phone Field

Jing Li

In this paper the author studies the time evolution of atomic linear entropies in the field-atom coupling system of a three-level atom interacting with two-mode photon field.The effect of the intensity coupling of field with the atom and the system's initial state on atomic linear entropies is also discussed.

Journal of Huaiyin Institute of Technology•Jan 1, 2007•0 citations

EMISSION SPECTRUM FOR A TWO-LEVEL ATOM INTERARCTING WITH GRAY-BODY RADIATION FIELD

GUO HONG, LI GAO-XIANG, PENG JIN-SHENG +1 more

A general expression of emission spectrum for a two-level atom interacting with gray-body radiation field is given in this paper. We investigate how the photon-number distribution of the incident field, the absorptivity of the cavity and the temperature of the system affect the time-dependent physical spectrum.

Acta Physica Sinica•Jan 1, 2000•2 citations

The properties of linear entropy in the J-C model with large detuning inside a phase cavity in the process of double photons

Chao Dong

The evolution of the linear entropies of the field,atoms and field-atoms coupling system in the system of two completely identical two-level atoms inside a phase-damping cavity interacting with a coherent field under large detuning are investigated.The effects of atomic initial state,the mean photon number of the field and the dissipation coefficient on the above linear entropies are discussed.The results show that the linear entropies of both the field and the atom are strongly dependent on the atomic initial state,but the evolution of the linear entropy of the system is independent of the atomic initial preparation.With the increasing of the mean photon number,the linear entropies of field,atoms and field-atoms increase;And the larger the dissipation,the more rapid the linear entropies of the field and system tend to the certain degree of mixture,but the linear entropies of atoms don't vary with the dissipation coefficient.

Jiguang zazhi•Jan 1, 2004•0 citations
Some investigations have been made on the evolution of the linear entropies of atom-field system, in which two identical two-level atoms simultaneously interact with a single-mode dissipative cavity field under large detuning. The effects of the initial atom states and the dissipative factors of the cavity on all linear entropies are also discussed. The results show that the influence of the cavity decay constant on different kinds of Bell states is completely different, and the state |Ψ〉12 is a robust entangled state against the decoherence while the state |Φ〉12 is a fragile entangled state.
The evolution of the linear entropies of the field,atoms and field-atoms coupling system in the system of two completely identical two-level atoms inside a phase-damping cavity interacting with a coherent field under large detuning are investigated.The effects of atomic initial state,the mean photon number of the field and the dissipation coefficient on the above linear entropies are discussed.The results show that the linear entropies of both the field and the atom are strongly dependent on the atomic initial state,but the evolution of the linear entropy of the system is independent of the atomic initial preparation.With the increasing of the mean photon number,the linear entropies of field,atoms and field-atoms increase;And the larger the dissipation,the more rapid the linear entropies of the field and system tend to the certain degree of mixture,but the linear entropies of atoms don't vary with the dissipation coefficient.