迭加态的Wigner函数

Wigner Functions of Superposition States

我们计算得出迭加态的Wigner函数是福克态|m>,|n>的Wigner函数及一项与迭加相φ位有关的附加项之和。我们讨论了迭加态Wigner函数的性质,Wigner函数的收缩。相位φ引起了Wigner函数在相空间中的旋转。

we calculate the Wigner distribution functions of superposition states.They are the sum of Wigner functions of Fock states |m>, |n>and an additionalterm which concerns the superposition phase φ. We discuss some properties andcontraction of Wigner functions of superposition states. Phase φ causes the ro-tation of Wigner function in phase space.