Open AccessENTROPY PROPETIES AND SCHRODINGER-CAT STATES OF THE FIELD INTERACTING WITH A Ξ TYPE THREE-LEVEL ATOM
Author(s) -
Xiang Liu,
Fang Mao-Fa,
Liu An-Ling
Publication year - 2000
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.49.1706
Subject(s) - physics , atom (system on chip) , schrödinger's cat , entropy (arrow of time) , quantum mechanics , coherent states , field (mathematics) , atomic physics , photon , mathematics , quantum , computer science , pure mathematics , embedded system
In this paper, we study the entropy properties of the field interacting with a Ξ type three-level atom, derive the calculating formula of the field(atomic)ent ropy, and discuss the influence of the initial atomic state and the one-photon d etuning on the field(atomic)entropy. With the help of Q function of the field(qu asiprobability distribution), the statistical properties of the field states are discussed. It is shown that the field is in the Schrodinger-Cat state at t=12TR when the atom is initially in the middle-level.