The Entropy Squeezing Properties in the Nonlinear Interaction Between Squeezing Vacuum State Field and Atom
Xiang-Ping Liao · Acta Sinica Quantum Optica · 2005
The field entropy squeezing properties in the nonlinear interaction between squeezing vacuum state field and atom are studied by means of quantum information entropy theory. The influences of nonlinear interaction intensity of Kerr medium and the squeezing degree of initial squeezing vacuum state field on the entropy squeezing properties are discussed. The results show that the field entropy can be squeezed periodically without Kerr medium, and the nonlinear interaction intensity of Kerr medium can change the periodicities of evolution of the field entropy squeezing, the field may exhibit long-time entropy squeezing effect when the squeezing degree of initial squeezing vacuum state field is big ((r=5).)