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

The influence of mass center motion on -type three-level atom dynamics

Hu Xiao-Ping, Guo Hong, 华中师范大学物理科学与技术学院,武汉 430079

Published Jan 1, 2009• 2 citations
Publisher

Abstract

The system of a single-mode field interacting with a -type three-level atom in a harmonic trap is investigated. The linear entropy of the field, the atomic internal states and the atomic mass center motion are explored. It is shown that the atomic mass center motion not only can affect the linear entropy of the field and the atomic internal states, but also effectively changes their relationship.

DOI
10.7498/aps.58.272.1

Related papers

The effect of mass center motion on a two-level atom emission spectrum

Hong Wei Guo, Zhao Li-Yan, (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；中国科学院武汉物理与数学研究所，武汉 430071

The emission spectrum of a two-level atom in a harmonic trap is studied. It is shown that atomic motion do not affect the atomic spectrum phase sensitivity when there is no correlation between atomic mass center motion and the field. With the increase of the average energy of atomic center motion, the peaks move towards each other, their heights change with the state of the field and atomic motion. When there is correlation between atomic mass center motion and the field, the atomic spectrum becomes insensitive to the relative phase between the field and the atomic dipole. Under certain conditions, there are fewer peaks, and they become higher and narrower.

Acta Physica Sinica•Jan 1, 2005•4 citations

Emission spectrum of a harmonically trapped Λ-type three-level atom

郭红, 汤佩

We theoretically investigate the emission spectrum for a Λ-type three-level atom trapped in the node of a standing wave. We show that the atomic center-of-mass motion not only directly affects the peak number, peak position, and peak height in the atomic emission spectrum, but also influences the effects of the cavity field and the atomic initial state on atomic emission spectrum.

中国物理B：英文版•Jan 1, 2013•0 citations

Emission spectrum of a harmonically trapped Λ-type three-level atom

Hong Mei Guo, Pei Song Tang

We theoretically investigate the emission spectrum for a Λ-type three-level atom trapped in the node of a standing wave. We show that the atomic center-of-mass motion not only directly affects the peak number, peak position, and peak height in the atomic emission spectrum, but also influences the effects of the cavity field and the atomic initial state on atomic emission spectrum.

Chinese Physics B•May 1, 2013•3 citations

Influence of the motion of atomic mass centre and field mode structure on the field entropy squeezing

Mao-Fa Fang

The influence of the motion of atomic mass centre, field mode structure and initial mean photon number on the field entropy squeezing is investigated by means of the theory of quantum information entropy. It is shown that the motion of atomic mass center leads to the periodic evolution of the field entropy squeezing and this period depends on the field mode structure parameter; an increase in field-mode structure parameter results in not only shortening of the evolution period of the field entropy squeezing but also prolonging of the squeezing time; the field may exhibit long time entropy squeezing effect for some choieed system parameters.

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

Algebraic Structure and Analytic Solutions of a Moving V-Type Three-Level Atom Interacting with a Two-Mode Cavity Field

Cuiling Zhang, Rui Dang, Jiali Zhang

In the framework of algebraic dynamics, the dynamics of a V-type three-level atom interacting with a two-mode of the quantized cavity field is considered with atomic center-of-mass motion included. The general analytical expressions for the linearized Hamiltonian and the reduced density operator are derived, which can be used to calculate the expectation values of any system operators. As an illustration, analytical expressions for the optical forces are obtained.

Chinese Journal of Physics•Dec 1, 2013•0 citations

The Entropy Squeezing Properties in a System of Single-mode FieldInteracting with Ξ Type Three-level Atom

HE Jin-yu

The field entropy squeezing properties in a system of vacuum of field interacting with Ξ type three-level atom are studied. The influence of the initial state of atoms and atom-field coupling constants on the field entropy squeezing is also discussed.

Acta Sinica Quantum Optica•Jan 1, 2002•0 citations
The system of a single-mode field interacting with a -type three-level atom in a harmonic trap is investigated. The linear entropy of the field, the atomic internal states and the atomic mass center motion are explored. It is shown that the atomic mass center motion not only can affect the linear entropy of the field and the atomic internal states, but also effectively changes their relationship.
The emission spectrum of a two-level atom in a harmonic trap is studied. It is shown that atomic motion do not affect the atomic spectrum phase sensitivity when there is no correlation between atomic mass center motion and the field. With the increase of the average energy of atomic center motion, the peaks move towards each other, their heights change with the state of the field and atomic motion. When there is correlation between atomic mass center motion and the field, the atomic spectrum becomes insensitive to the relative phase between the field and the atomic dipole. Under certain conditions, there are fewer peaks, and they become higher and narrower.
The influence of the motion of atomic mass centre, field mode structure and initial mean photon number on the field entropy squeezing is investigated by means of the theory of quantum information entropy. It is shown that the motion of atomic mass center leads to the periodic evolution of the field entropy squeezing and this period depends on the field mode structure parameter; an increase in field-mode structure parameter results in not only shortening of the evolution period of the field entropy squeezing but also prolonging of the squeezing time; the field may exhibit long time entropy squeezing effect for some choieed system parameters.