Open AccessSudden death and revival of entanglement in two V-type three-level atoms
Author(s) -
Wei Qiao,
Yan Yan,
Gaoxiang Li
Publication year - 2010
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.59.4453
Subject(s) - quantum entanglement , quantum decoherence , sudden death , physics , excited state , atom (system on chip) , quantum mechanics , atomic physics , quantum , medicine , computer science , embedded system , cardiology
We have studied the sudden death and revival of entanglement in two V-type three-level atoms coupled to the common vacuum. results show that in the case of largely separated atoms, spontaneous emission leads to decoherence and even causes entanglement sudden death. However, the excited-state decay rate of the atom can affect the time of entanglement sudden death. In the case of closely separated atoms, due to the collective effect of atoms, the entanglement which has been dead will revive in some time. The initial entanglement and the revival of entanglement arise from different causes.