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

Quantum entanglement of the binomial field interacting with a cascade three-level atom

Yao-Hua Hu, Mao-Fa Fang, Xiang-Ping Liao, Zheng Xiao-Juan, 湖南师范大学物理与信息科学学院,长沙 410081

Published Jan 1, 2006• 11 citations
Publisher

Abstract

Quantum entanglement between a binomial field and a cascade three level atom is studied by using quantum entropy theory, and the influences of the initial state parameters of the field and the atom on the quantum entanglement are discussed. The results show that quantum entanglement of all states from the coherent state to number state interacting with a cascade three level atom can be displayed by using the binomial field property. Steady field-atom qutrit entanglement state can be prepared via the appropriate selection of system parameters.

DOI
10.7498/aps.55.4631

Related papers

Entropy Squeezing of the Binomial State Field Interacting with a Cascade Three-level Atom

Yao Hu

Entropy squeezing effect of the binomial state field interacting with a cascade three-level at- om are studied by using quantum entropy theory effect and calculation method,and the influences of initial field parameters on the entropy squeezing effect of the field are discussed.The results are that, firstly,when the field is initially in a coherent state,entropy squeezing effect can be exhibited in a short time;secondly,when the initial field is in a middle state between the coherent state and number state,the depth and sustained time of the field's squeezing effect increase;finally,when the initial field transmit to a lock state,the field's squeezing effect weakens and disappears in the end.The re- sults show that binomial state field displays obviously entropy squeezing effect when it interacts with a cascade three-level atom.

Journal of Zhuzhou Teachers College•Jan 1, 2007•0 citations

Quantum properties of the binomial state field interacting with a cascade three-level atom

Chunlei Jiang

Antibunching effect and squeezing property of the binomial state field interact- ing with a cascade three-level atom are studied by using quantum theory and calculation method,and the influences of initial field parameters on the quantum properties of the field are discussed.The results are that,firstly,when the field is initially in a coherent state,its antibunching effect can be displayed discontinuously and squeezing effect can be exhibited in a short time;Secondly,when the initial field is in a middle state between the coherent state and number state,the field shows antibunching effect continuously and the deep degree and sustained time of its squeezing effect increase;Finally,while when the initial field transmits to a fock state,the field reveals continuously antibunching effect but its squeezing effect weak- ens to disappear.Our results show that binomial state field displays remarkable no-classical properties when it interacts with a cascade three-level atom.

Chinese Journal of Quantum Electronics•Jan 1, 2006•0 citations

Entangled states in the two-mode coherent fields interacting with a two-level atom

Xiaojuan Liu, Mao-Fa Fang

We investigate the entanglement properties of the two-mode coherent fields interacting with a two-level atom via the two-photon transition. We discuss the quantum entanglement between the two-mode coherent fields and the two-level atom by using the quantum reduced entropy and that between the two-mode coherent fields by using the quantum relative entropy. We also examine the influences of the initial states of the atom and the two-mode coherent fields on the quantum entanglement of the system. Our results show that three types of entangled states can be prepared via the two-mode coherent fields interacting with a two-level atom and choosing appropriately the initial-state parameters of the system.

Chinese Physics•Aug 29, 2003•21 citations

Influence of Field Entropy Evolution in Binomial Light Filed Interacting with Cascade Three-level Atom in Kerr Medium

Jianrong Wang

In this paper,the influences of kerr medium coefficient and detuning on the entanglement evolution of cascade three-level atom in binomial light filed are studied based on quantum theory.The results show that the influences of kerr medium coefficient and detuning on the entanglement evolution are different with intensity of light field.Stable entanglement condition can be obtained by choosing an appropriate Kerr medium coefficient.

Journal of Taiyuan University of Science and Technology•Jan 1, 2013•0 citations

Quantum entanglement of the binomial field interacting with a cascade three-level atom beyond the rotating wave approximation

Ren Jun xue

In this paper, the quantum entanglement between a single mode binomial field and a cascade three-level atom is calculated mechanically without the rotating wave approximation. The numerical results indicate that the quantum entanglement at the first few periods is reduced notably due to the fact that the atom is initially in the superposition state. With increasing field parameter , the period of the entanglement evolution becomes obvious and the quantum decoherence phenomenon emerges in a short time.

Science in China. Series G, Physics, mechanics & astronomy/Science in China. Series G, Physics, Mechanics & Astronomy•Jan 1, 2011•0 citations

Quantum Properties of the Binomial Field Interacting with a Cascade Threelevel Atom Beyond the Rotating Wave Approximation

丛红璐 Cong Honglu, 唐多昌 TANG Duochang, 刘雪华 LIU Xue-hua +2 more

The squeezing effect and atomic population of the binomial field interacting with a cascade three level atom are calculated accurately without rotating-wave approximation(without RWA) by using the complete quantum theory.The influences of the binomial state field parameter η on the field squeezing effect and the maximum photon number M of the binomial state field on the atomic population are considered.The results obtained from using the numerical method show that with increase of the binomial state field parameter η,the duration of the squeezing effect increases at first and then decreases.The little indentation oscillation appears in the evolution curves of the field squeezing effect,which is caused by virtual photon without RWA.The period of the revival-collapse increases with the increase of the maximum photon number M,and the atomic population can not collapse completely in the collapse regime,but displays little indentation oscillation.In addition the influence of the without-RWA terms on the quantum properties of the system are discussed.

ACTA PHOTONICA SINICA•Jan 1, 2012•0 citations
Quantum entanglement between a binomial field and a cascade three level atom is studied by using quantum entropy theory, and the influences of the initial state parameters of the field and the atom on the quantum entanglement are discussed. The results show that quantum entanglement of all states from the coherent state to number state interacting with a cascade three level atom can be displayed by using the binomial field property. Steady field-atom qutrit entanglement state can be prepared via the appropriate selection of system parameters.
Entropy squeezing effect of the binomial state field interacting with a cascade three-level at- om are studied by using quantum entropy theory effect and calculation method,and the influences of initial field parameters on the entropy squeezing effect of the field are discussed.The results are that, firstly,when the field is initially in a coherent state,entropy squeezing effect can be exhibited in a short time;secondly,when the initial field is in a middle state between the coherent state and number state,the depth and sustained time of the field's squeezing effect increase;finally,when the initial field transmit to a lock state,the field's squeezing effect weakens and disappears in the end.The re- sults show that binomial state field displays obviously entropy squeezing effect when it interacts with a cascade three-level atom.
Antibunching effect and squeezing property of the binomial state field interact- ing with a cascade three-level atom are studied by using quantum theory and calculation method,and the influences of initial field parameters on the quantum properties of the field are discussed.The results are that,firstly,when the field is initially in a coherent state,its antibunching effect can be displayed discontinuously and squeezing effect can be exhibited in a short time;Secondly,when the initial field is in a middle state between the coherent state and number state,the field shows antibunching effect continuously and the deep degree and sustained time of its squeezing effect increase;Finally,while when the initial field transmits to a fock state,the field reveals continuously antibunching effect but its squeezing effect weak- ens to disappear.Our results show that binomial state field displays remarkable no-classical properties when it interacts with a cascade three-level atom.
We investigate the entanglement properties of the two-mode coherent fields interacting with a two-level atom via the two-photon transition. We discuss the quantum entanglement between the two-mode coherent fields and the two-level atom by using the quantum reduced entropy and that between the two-mode coherent fields by using the quantum relative entropy. We also examine the influences of the initial states of the atom and the two-mode coherent fields on the quantum entanglement of the system. Our results show that three types of entangled states can be prepared via the two-mode coherent fields interacting with a two-level atom and choosing appropriately the initial-state parameters of the system.
In this paper, the quantum entanglement between a single mode binomial field and a cascade three-level atom is calculated mechanically without the rotating wave approximation. The numerical results indicate that the quantum entanglement at the first few periods is reduced notably due to the fact that the atom is initially in the superposition state. With increasing field parameter , the period of the entanglement evolution becomes obvious and the quantum decoherence phenomenon emerges in a short time.
The squeezing effect and atomic population of the binomial field interacting with a cascade three level atom are calculated accurately without rotating-wave approximation(without RWA) by using the complete quantum theory.The influences of the binomial state field parameter η on the field squeezing effect and the maximum photon number M of the binomial state field on the atomic population are considered.The results obtained from using the numerical method show that with increase of the binomial state field parameter η,the duration of the squeezing effect increases at first and then decreases.The little indentation oscillation appears in the evolution curves of the field squeezing effect,which is caused by virtual photon without RWA.The period of the revival-collapse increases with the increase of the maximum photon number M,and the atomic population can not collapse completely in the collapse regime,but displays little indentation oscillation.In addition the influence of the without-RWA terms on the quantum properties of the system are discussed.