(1) Department of Physics, Jiangxi Institute of Education, Nanchang, 330029, People’s Republic of China;(2) Department of Physics, Hunan Normal University, Changsha, 410081, People’s Republic of China
Abstract:
We investigate quantum Fisher information dynamics in two component Bose-Einstein condensate interacting spins with an external field. Approximate analytical expressions of quantum Fisher information is presented. Our analysis shows that quantum Fisher information is controlled by adjusting the strength of the external field and the total atomic number. It is shown that the maximal mean quantum Fisher information is occurred and the phase estimation is enhanced to the Heisenberg limit under some conditions.
