Nonclassicality quasiprobability of single-photon-added thermal states
Nonclassicality quasiprobability of single-photon-added thermal states
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DOI：
10.1103/physreva.83.032116
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发表时间：
2011-03-18
影响因子：
2.9
通讯作者：
Zavatta, A.
中科院分区：
文献类型：
--
作者：
Kiesel, T.;Vogel, W.;Zavatta, A.
我们报道了单光子加热态的非经典准概率的实验重建。这个量具有显著的负性，这对于量子态的非经典是必要和充分的。与重构P函数相比，我们的方法显示出几个优点，因为在这种情况下使用的非经典滤波器可以正则化准概率及其统计不确定性。因此，关于量子态的先验假设是不必要的。我们还证明，原则上，我们的方法不受小量子效率的限制。
We report the experimental reconstruction of a nonclassicality quasiprobability for a single-photon-added thermal state. This quantity has significant negativities, which is necessary and sufficient for the nonclassicality of the quantum state. Our method exhibits several advantages compared to the reconstruction of the P function, since the nonclassicality filters used in this case can regularize the quasiprobabilities as well as their statistical uncertainties. A priori assumptions about the quantum state are therefore not necessary. We also demonstrate that, in principle, our method is not limited by small quantum efficiencies.