论文标题
在猫状态下感测
Sensing Single Photon in a Cat State
论文作者
论文摘要
猫状态显示通过其正交对应物与自身的叠加和激发的振荡器状态来“存储”单个光子。光子添加导致在观察到的wigner函数的相位空间干扰中，导致$π$相移，该函数还显示了负相干状态的平均光子数（$ |α|^2 $）的负性，该状态包含CAT状态。在添加光子后，在小猫状态的相空间中的子planck瓷砖的最大值和最小值互换，导致其正交性。有趣的是，以泊松统计为特征的Yurke-Stoler状态增加的光子会导致倍森分布。
The cat state is shown to `store' a single photon through the superposition of its orthogonal counterpart with itself, and an excited oscillator state. Photon addition leads to a $π$ phase shift at origin in the observed phase space interference of the Wigner function, which also displays negativity, controlled by the average photon number ($|α|^2$) of coherent states comprising the cat state. The maxima and minima of the sub-Planck tiles in the phase space of the kitten state are interchanged after photon addition, leading to their orthogonality. Interestingly, photon addition to Yurke-Stoler state characterized by Poissonian statistics leads to a sub-Poissonian distribution.
