Dynamics of X-state in anisotropic Heisenberg spin with magnetic field
arXiv:1708.06632
Abstract
We study the dynamics of X-state for anisotropic Heisenberg spin system using quantum fidelity. It is shown that while Bell diagonal state, a special class of X-state, is stationary, there exists a set of two parametric states which are stationary in presence of external uniform magnetic field.
arXiv comment3 Pages