Results 231 to 240 of about 951 (252)

A STUDY ON THE SUDDEN DEATH AND SUDDEN BIRTH OF ENTANGLEMENT IN AN OPEN SYSTEM

International Journal of Quantum Information, 2009
In this paper, we consider the entanglement dynamics of two cavities interacting with independent reservoirs. When the cavity entanglement suddenly disappeared, the reservoir entanglement suddenly and necessarily appears. We study the effect of purity of initial entangled state of two cavities on the entanglement evolution, and acquire that the purity
Zhang, Ying-Jie, Xia, Yun-Jie
openaire   +1 more source

A NEW FEATURE ON THE SUDDEN DEATH OF ENTANGLEMENT

Modern Physics Letters B, 2008
Based on the exactly analytic solution obtained of the intensity-dependent Jaynes–Cummings model for a certain class of initial entangled mixed states, we explore the time evolution of the entanglement between two atoms, initially non-locally correlated and separately interacting with two distinct cavities.
openaire   +2 more sources

The sudden death of entanglement in constructed Yang–Baxter systems

Quantum Information Processing, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Taotao Hu, Chunfang Sun, Kang Xue
openaire   +2 more sources

Three-Qubit Entanglement Sudden Death

Communications in Theoretical Physics, 2008
We study entanglement dynamics of three-qubit system via negativity. Three atoms A, B, and C interact isolatedly with their own Jaynes–Cummings cavities a, b, and c. Aa system is prepared entangled with Bb and Cc, however, their mutual isolations forbid Aa interacting with system Bb and Cc. It is the same for system Bb and Cc.
Ge Min, Zhu Lin-Fan, Qiu Liang
openaire   +1 more source

Entanglement sudden death in a spin channel

Journal of Physics A: Mathematical and Theoretical, 2007
We study the dynamic evolution of the entanglement in a spin channel with an XY-type interaction initially in an entangled state. We find that the phenomenon of entanglement sudden death (ESD) appears in the evolution of entanglement for some initial states.
Xiao Qiang Su, An Min Wang, Xiao San Ma, Liang Qiu   +3 more
openaire   +1 more source

A Study on Entanglement Sudden Death in the Open Bipartite Systems

International Journal of Theoretical Physics, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiao, Jia Hua, Fang, Mao Fa, Huang, Guo Hui, Yang, Xiong   +3 more
openaire   +1 more source

ENTANGLEMENT TRAPPING AND SUDDEN DEATH IN A COMMON BAND GAP

International Journal of Quantum Information, 2011
Using the pseudomode method, we study the exact entanglement dynamics of two atoms in a common band gap. In order to understand the role played by the common band gap we compare our results with the case of two independent band gap model. We demonstrate that the parameter region at which the entanglement sudden death occurs is smaller than the ...
Han, Feng, Zhang, Ming-Hua
openaire   +1 more source

Determining Separability with Entanglement of Formation and Entanglement Sudden Death

Chinese Physics Letters, 2015
An algorithm is developed to calculate the entanglement of formation for bipartite quantum states to determine numerically the sufficient condition of separability. The algorithm is applied to two 3×3 positive partial transpose states mixed with white noise.
openaire   +1 more source

Coherent and ultrafast manipulation of entanglement sudden death and recurrence

Optics Letters, 2010
We investigate the entanglement dynamics of the bipartite system, consisting of two interacting two-level atoms in QED, which are driven additionally by coherent double ultrashort laser pulses characterized by various phase differences. Results show that the relative phase difference can exert significant influence on the entanglement evolution, such ...
Xiang-yang, Yu, Jian-hong, Li
openaire   +2 more sources

Pre-management of Entanglement Sudden Death

The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting, 2013
We report a summary of our work on management of entanglement sudden death (ESD) through initial conditions. ESD phases are shown for a generic two-qubit system that undergoes local but unbalanced amplitude damping dissipations.
openaire   +1 more source