Abstract
We discuss freezing of quantum imaginarity based on l1-norm.Several properties about a quantity of imaginarity based on l1-norm are revealed.For a qubit(2-dimensional)system,we characterize the structure of real quantum operations that allow for freezing the quantity of imaginarity of any state.Furthermore,we characterize the structure of local real operations which can freeze the quantity of imaginarity of a class of N-qubit quantum states.
基金项目
National Natural Science Foundation of China(12271325)
Natural science Basic Research Plan in Shaanxi Province of China(2020JM-294)
万方数据