Open AccessQuantum mechanical channel and quantum mutual entropy in the two-photon Jaynes-Cummings model with atomic motion
Author(s) -
Xiaojuan Liu,
Fang Mao-Fa,
Zhou Qing-Ping
Publication year - 2005
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.54.703
Subject(s) - physics , quantum discord , amplitude damping channel , quantum relative entropy , quantum mechanics , quantum entanglement , quantum channel , quantum mutual information , quantum information , quantum
The dynamics of the two_photon Jaynes_Cummings model with atomic motion are studied by using the quantum information theory, and the quantum echanical channel representing the state change of atom is given; the quantum mutual entropy and reduced entropy of the atom are derived. The influences of the atomic motion and the field structure on the quantum mutual entropy are examined. It is shown that the properties of quantum mechanical channel are strongly dependent on the atomic motion, the field model structure, and the entanglement between the atom and the field.