Open AccessThe entanglement character of two entangled atoms in multiphoton Tavis-Cummings model
Author(s) -
Ying-Jie Zhang,
Zhiwen Yuan,
YunJie Xia
Publication year - 2008
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.57.21
Subject(s) - quantum entanglement , physics , w state , atom (system on chip) , photon , multipartite entanglement , photon entanglement , atomic physics , quantum mechanics , state (computer science) , quantum optics , quantum , squashed entanglement , algorithm , computer science , embedded system
We investigated the entanglement time evolution of two entangled two-level atoms. The two atoms can undergo multiphoton transition when they interact resonantly with a single-mode field in the coherent state. The results show that the two-atom entangled state evolves periodicity. The influence of the two-atom initial statethe dipole-dipole coupling intensity between two atomsthe parameter of the coherent state and the number of the transitional photons on the entanglement degree of two atoms are revealed. When the initial state is a maximum entangled statethe state of the two entangled atoms will forever stay in this maximum entangled state. So this kind of entanglement state can be used for quantum information storage.