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

Chinese Optics Letters

双模腔场中的纠缠猝死现象

Feng Han, Yun‐Jie Xia

Published Jan 1, 2010• 2 citations
Publisher

Abstract

The entanglement dynamics involving the so-called entanglement sudden death of atoms in two-photon Tavis-Cummings model is investigated.Various initial conditions that may have influences on the entanglement evolution of atoms, especially on the appearance of atomic entanglement sudden death, are studied.The appearance of entanglement sudden death is sensitive to the initial conditions of the whole system, i.e., the concrete type of atomic initial state, the photon number in the cavity field, and the dipole-dipole interaction between atoms.It is shown that the strong dipole-dipole interaction between atoms can weaken the atomic entanglement sudden death.

DOI
10.3788/col20100802.0231

Related papers

Controlling entanglement sudden birth and sudden death of two-atom X-states in Tavis-Cummings model

Shan Chuan-Jia, Jibing Liu, Tao Chen +3 more

In this paper, we investigate the entanglement dynamics of two entangled two-level atoms with initial X state and dipole-dipole coupling intensity in Tavis-Cummings model. The interesting phenomena of entanglement sudden death as well as sudden birth appear during the evolution process. We analyze in detail the effect of purity of initially entangled state of two atoms, the dipole-dipole coupling intensity between two atoms, and the field in the Fock state on the apparition time of entanglement sudden death and entanglement sudden birth. Furthermore, the conditions for the conversion of entanglement sudden death and entanglement sudden birth can be generalized when the initial entangled state is not pure. The results show that the above system parameters affect the concurrence, entanglement sudden birth and sudden death remarkably, the dipole-dipole coupling intensity affects amplitudes of the concurrence oscillation and leads time interval of the ESD to decrease. With the increasing of the purity, the time of entanglement sudden death and entanglement sudden birth will decrease, it is also notable that invariant and stable entanglement, which can be controlled by different initial states of the atoms, occurs for particular initial X state.

Acta Physica Sinica•Jan 1, 2010•7 citations

The influences of dipole–dipole interaction and detuning on the sudden death of entanglement between two atoms in the Tavis–Cummings model

Chen Li, Shao Xiao-Qiang, Zhang Shou

The influences of dipole-dipole interaction and detuning on the entanglement between two atoms with different initial tripartite entangled W -like states in the Tavis–Cummings model have been investigated by means of Wootters' concurrence, respectively. The results show that the entanglement between the two atoms can be enhanced via appropriately tuning the strength of dipole-dipole interaction of two atoms or the detunings between atom and cavity, and the so-called sudden death effect can be weakened simultaneously.

Chinese Physics B•Mar 1, 2009•21 citations

The dynamics of entanglement in two-atom Tavis-Cummings model with non-degenerate two-photon transitions for tripartite entangled W-like states

Eugene K. Bashkirov, Michail S. Mastyugin

The influence of dipole-dipole interaction on the entanglement between two atoms with different initial entangled W-like states in Tavis-Cummings model with degenerate two-photon transitions has been investigated. The results show that the entanglement between two atoms can be increased by means of dipole-dipole interaction and for some initial states the entanglement sudden death effect can be weakened.

arXiv:1210.3683•Oct 13, 2012•0 citations

THE INFLUENCE OF DIPOLE-DIPOLE INTERACTION ON THE SUDDEN DEATH OF ENTANGLEMENT OF TWO ATOMS WITH DEGENERATE TWO-PHOTON TRANSITIONS

Eugene K. Bashkirov, Анна Михайловна Евдокимова, Michail S. Mastyugin

The influence of dipole-dipole interaction on the entanglement between twoatoms with different initial W-like states in Tavis-Cummings model with degenerate two-photon transitions has been investigated. The results show that theentanglement between two atoms can be increased by means of dipole-dipoleinteraction and for some initial states the sudden death effect can be weakened.

Vestnik of Samara University Natural Science Series•Jun 16, 2011•0 citations

Sudden Death of Entanglement between Two Atoms with Initial Tripartite Entangled State in the Tavis–Cummings Model

Qing Yang, Yang Ming, Zhuo‐Liang Cao

We study the entanglement dynamics of two atoms with initial tripartite entangled W-like state in the Tavis–Cummings model. We find that the entanglement evolvement is sensitive not only to the entanglement degree of the initial state but also to the concrete form of the initial state. The so-called sudden death effect occurs only for some initial states.

Chinese Physics Letters•Mar 1, 2008•24 citations

Entanglement between two Tavis–Cummings atoms with phase decoherence

Jin‐Liang Guo, He‐Shan Song

Taking the intrinsic decoherence effect into account, we investigate the dynamical behavior of entanglement between two Tavis–Cummings atoms coupled to a single mode field. We find that entanglement characters including the stationary entanglement and the so-called sudden death effect are sensitive to initial atomic state and photon numbers.

Journal of Modern Optics•Jan 28, 2009•20 citations
The entanglement dynamics involving the so-called entanglement sudden death of atoms in two-photon Tavis-Cummings model is investigated.Various initial conditions that may have influences on the entanglement evolution of atoms, especially on the appearance of atomic entanglement sudden death, are studied.The appearance of entanglement sudden death is sensitive to the initial conditions of the whole system, i.e., the concrete type of atomic initial state, the photon number in the cavity field, and the dipole-dipole interaction between atoms.It is shown that the strong dipole-dipole interaction between atoms can weaken the atomic entanglement sudden death.
In this paper, we investigate the entanglement dynamics of two entangled two-level atoms with initial X state and dipole-dipole coupling intensity in Tavis-Cummings model. The interesting phenomena of entanglement sudden death as well as sudden birth appear during the evolution process. We analyze in detail the effect of purity of initially entangled state of two atoms, the dipole-dipole coupling intensity between two atoms, and the field in the Fock state on the apparition time of entanglement sudden death and entanglement sudden birth. Furthermore, the conditions for the conversion of entanglement sudden death and entanglement sudden birth can be generalized when the initial entangled state is not pure. The results show that the above system parameters affect the concurrence, entanglement sudden birth and sudden death remarkably, the dipole-dipole coupling intensity affects amplitudes of the concurrence oscillation and leads time interval of the ESD to decrease. With the increasing of the purity, the time of entanglement sudden death and entanglement sudden birth will decrease, it is also notable that invariant and stable entanglement, which can be controlled by different initial states of the atoms, occurs for particular initial X state.
The influences of dipole-dipole interaction and detuning on the entanglement between two atoms with different initial tripartite entangled W -like states in the Tavis–Cummings model have been investigated by means of Wootters' concurrence, respectively. The results show that the entanglement between the two atoms can be enhanced via appropriately tuning the strength of dipole-dipole interaction of two atoms or the detunings between atom and cavity, and the so-called sudden death effect can be weakened simultaneously.