利用微脉塞重构腔场的Wigner函数

Reconstructing the Wigner function of cavity fields with the micromaser

提出了重构腔场Wigner函数的一种新方案 .该方案可以用微脉塞来实现 .发现在腔场的Wigner函数与原子的布居数之间存在一个简单的关系 .在实验上测得原子的布居数后 ,进行一个简单的数值积分 ,就可得到腔场的Wigner函数 .以单光子Fock态和Schr dinger猫态为例进行了数值模拟 ,发现与用精确公式计算的结果很好地相符 .

A scheme for reconstructing the Wigner function of cavity fields is proposed, and this scheme can be realized with the micromaser. We find that there is a simple relation between the Wigner function of cavity fields and the atomic populations. Therefore, we can reconstruct the Wigner function of cavity fields by measuring the atomic populations in the micromaser experiments. We test our theory with the one-photon Fock state and the Schrodinger cat state, and find that the results are rather good.