Affiliation:
1. College of Mathematics and Statistics, Northwest Normal University , Lanzhou 730070, China
Abstract
In this article, we study the evolution of the two-qubit system with Ising spin-chain environment by choosing the Lindblad equation to describe this process. First, we expand the Hamiltonian of a two-qubit system with its eigenstates and give the Lindblad equation for the evolution of the two-qubit system with Ising spin-chain as the environment. Compared with directly calculating the differential equation between elements of density matrix, we choose a method to solve the Lindblad equation with a smaller calculation dimension. Finally, by constructing an operator solution with operators, we obtain the dynamics of the two-qubit system with Ising spin-chain environment.
Funder
National Natural Science Foundation of China
Higher Education Innovation Fund of Gansu Provincial Department of Education