Open AccessEntanglement properties in the system of atoms interacting with three coupled cavities which are in weak coherent states
Author(s) -
LU Dao-ming
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.030302
Subject(s) - quantum entanglement , physics , atom (system on chip) , coupling (piping) , field (mathematics) , cavity wall , coupling constant , cavity quantum electrodynamics , w state , atomic physics , quantum mechanics , materials science , quantum , mathematics , computer science , open quantum system , pure mathematics , metallurgy , composite material , embedded system
We study the entanglement dynamics of the system comprising three two-level atoms resonantly interacting with three coupled cavities which are in weak coherent states initially. The atom-atom entanglement and cavity-cavity entanglement are investigated. The influences of coupling constant between cavities and intensity of the cavity field on entanglement properties are discussed. The results obtained using the numerical method show that atom-atom entanglement and cavity-cavity entanglement are both strengthened with the increase of intensity of the cavity field; on the other hand, atom-atom entanglement is weakened and the entanglement between cavity A and cavity B is strengthened with the increase of the coupling constant between cavities, and the entanglement between cavity B and cavity C has a nonlinear relation with the increase of the cavity-cavity coupling coefficient. These results are different from those in the case that cavity field is in vacuum state initially.