二能级原子与强相干场相互作用系统的线性熵

Linear Entropies of a Two-level Atom Interacting with Strong Coherent Field

在强相干场驱动下,二能级原子和光场相互作用系统中,原子和光场线性熵的演化规律与原子的初态有着密切的联系.在原子布居差的回复周期中点,原子最接近纯态,但光场的线性熵却因原子初态无序度的不同而有所不同.

The linear entropies of atom and field in a two--level atom-field coupling system are investigated in this paper. For a coherent field, at the half periodic points of the revivals of the atomic population, the atom evolves into a pure state when the field is strong. At the same time, the field linear entropy is directly affected by the initial linear entropy of the atom.