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 Polonica A

Influence of the Phase on the Entanglement between a Jaynes-Cummings Atom and an Isolated Atom

Chao-Qian Pang, Mai-Lin Liang

Published May 1, 2014• 6 citations
Publisher

Abstract

A scheme is presented to generate an entangled atomic state, for which the quantum phase aects the atom atom entanglement when the atom interacts with external light elds.The quantum phase enhances the entanglement and extends the time that the system stays in stronger entanglement state or the phase makes the system more robust.It is also shown that the quantum phase is able to delay the entanglement sudden death and hasten the entanglement revival.

DOI
10.12693/aphyspola.125.1069

Related papers

Sudden death of entanglement of two Jaynes–Cummings atoms

Muhammed Yönaç, Ting Yu, Joseph H. Eberly

We investigate entanglement dynamics of two isolated atoms, each in its own Jaynes–Cummings cavity. We show analytically that initial entanglement has an interesting subsequent time evolution, including the so-called sudden death effect.

arXiv:quant-ph/0602206•Journal of Physics B Atomic Molecular and Optical Physics•Jul 24, 2006•320 citations

Control of Sudden Death of Entanglement by Transient Effects

Hünkar Kayhan

We investigate the properties of entanglement between an isolated atom and a Jaynes—Cummings atom in the presence of transient effects. These effects are due to the modulation of the atom-field coupling whose explicit time-dependence is considered for the case of the linear sweep. We show that the sudden death of entanglement can be controlled by the transient effects. These effects can suppress the sudden death of entanglement in time.

Communications in Theoretical Physics•Sep 1, 2011•6 citations

Time evolution and transfer of entanglement between an isolated atom and a Jaynes–Cummings atom

Zhi-Jian Li, Jun‐Qi Li, Yan-Hong Jin +1 more

We investigate the entanglement dynamics of two space-separated atoms, one of them in Jaynes–Cummings cavity and the other isolated completely. We show analytically that initial entanglement has an interesting subsequent time evolution and transfer, including the so-called sudden death effect. A little inconsistency of concurrence and negativity is indicated qualitatively to measure the two-qubit states.

Journal of Physics B Atomic Molecular and Optical Physics•Aug 21, 2007•44 citations

Exact solution of entanglement of the double Jaynes–Cummings model without rotating wave approximation

Xuezao Ren, Jiang Dao-Lai, Cong Hong-Lu +1 more

This paper investigates the influences of atom-field coupling and dipole–dipole coupling for atoms on the entanglement between two atoms by means of concurrence. The results show that the sudden death occurs when the atom-field coupling is strong enough, and the collapse and the revival appear when the dipole–dipole interaction is strong enough.

Chinese Physics B•Sep 1, 2010•2 citations

The entanglement between two isolated atoms in the double mode–mode competition model

Qin Wu, Mao-Fa Fang, Cai Jian-Wu +1 more

Extending the double Jaynes–Cummings model to a more complicated case where the mode–mode competition is considered, we investigate the entanglement character of two isolated atoms by means of concurrence, and discuss the dependence of atom–atom entanglement on the different initial state and the relative coupling strength between the atom and the corresponding cavity field. The results show that the amplitude and the period of the atom–atom entanglement evolution can be controlled by the choice of initial state and relative coupling strength, respectively. We find that the phenomenon of entanglement sudden death (ESD) is sensitive to the initial conditions. The length of the time interval for zero entanglement depends not only on the initial degree of entanglement between two atoms but also on the relative coupling strength of atom–field interaction. The ESD effect can be weakened by enhancing the mode–mode competition between the three- and single-photon processes.

Chinese Physics B•Dec 1, 2009•6 citations

DYNAMICAL SUPPRESSION OF ENTANGLEMENT SUDDEN DEATH IN A JAYNES–CUMMINGS MODEL EXTENDED

Xue‐Qun Yan

The Jaynes–Cummings model extended by the inclusion of mode structure and atomic motion is an elementary model that describes the interaction between a single atom and electromagnetic pulse. Based on the model, we explore the time evolution of the entanglement between two atoms, initially non-locally correlated and crossing separately two distinct cavities. Our results show that this model suggests a strategy to fight against the so-called entanglement sudden death, and in the situation resurrection of the original entanglement value occurs periodically and the entanglement will remain at the original value for a finite duration.

Modern Physics Letters B•Jan 20, 2009•0 citations
A scheme is presented to generate an entangled atomic state, for which the quantum phase aects the atom atom entanglement when the atom interacts with external light elds.The quantum phase enhances the entanglement and extends the time that the system stays in stronger entanglement state or the phase makes the system more robust.It is also shown that the quantum phase is able to delay the entanglement sudden death and hasten the entanglement revival.
Extending the double Jaynes–Cummings model to a more complicated case where the mode–mode competition is considered, we investigate the entanglement character of two isolated atoms by means of concurrence, and discuss the dependence of atom–atom entanglement on the different initial state and the relative coupling strength between the atom and the corresponding cavity field. The results show that the amplitude and the period of the atom–atom entanglement evolution can be controlled by the choice of initial state and relative coupling strength, respectively. We find that the phenomenon of entanglement sudden death (ESD) is sensitive to the initial conditions. The length of the time interval for zero entanglement depends not only on the initial degree of entanglement between two atoms but also on the relative coupling strength of atom–field interaction. The ESD effect can be weakened by enhancing the mode–mode competition between the three- and single-photon processes.
The Jaynes–Cummings model extended by the inclusion of mode structure and atomic motion is an elementary model that describes the interaction between a single atom and electromagnetic pulse. Based on the model, we explore the time evolution of the entanglement between two atoms, initially non-locally correlated and crossing separately two distinct cavities. Our results show that this model suggests a strategy to fight against the so-called entanglement sudden death, and in the situation resurrection of the original entanglement value occurs periodically and the entanglement will remain at the original value for a finite duration.