Open AccessDynamical entanglement in the model of field interacted with atoms of a nonlinear medium
Author(s) -
Yuan Yan,
Wei Hou
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.62.110301
Subject(s) - von neumann entropy , concurrence , quantum entanglement , von neumann architecture , physics , nonlinear system , quantum mechanics , quantum discord , entropy (arrow of time) , statistical physics , quantum , mathematics , pure mathematics
The dynamical entanglement in a model of the field interacted with atoms in a nonlinear medium is studied in terms of concurrence and the reduced Neumann entropy for the generalized binomial state of the field and the ground state of atoms. It is shown that concurrence is dominantly-positively correlated with the reduced Neumann entropy. The entanglement under suitable condition is nearly unchanged for a long time. This is useful for quantum information processing.