Preservation of quantum correlations in the presence of dissipative systems.

Quantum correlations in the presence of open quantum systems disappear with time,
researchers have presented various methods to maintain these correlations. In this thesis, while
studying the previous methods, we tried to make the classical effect on the dynamics of quantum
correlations, by assuming an incoherent model of a two-scale atom that is in the same field with a
tank and is influenced by a It has been the field. Classic is located, we have done. It also shows
how the decay of quantum correlations can be done with the help of the classical field and the
central frequency adjustment of the tank and how to apply them as a dynamic control method. To
achieve this goal, the model is first introduced, and then the dynamics of the two-level class system
are calculated with the help of the field, and its effect on the classical LQU and GOD is presented
as correlation characteristics, and by writing the appropriate Hamiltonian and solving the
Schrödinger equation. This Hamiltonian has shown that by changing the frequency and strength
of the field, the drop of these correlations can be used. Finally, according to the presented model,
for each of the said correlations, the density matrix has been brought analytically, and then the
interaction diagrams of this field with the correlations have been expressed and analyzed.
 

PhD thesis, Supervisors: Dr M. Behboodnia and Dr. F. Eghbalifam

advisor: Dr. B. Ahansaz