A new measure of nonclassical distance
A new measure of nonclassical distance
复制标题
非经典距离的新测量
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
H. Scutaru
中科院分区：
文献类型：
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作者：
H. Scutaru
在高斯态的情况下，我们提出了一种新的非经典距离的度量。让我们考虑两个高斯态，其中一个是固定的，另一个贯穿高斯经典态的集合。这两个状态之间的保真度的最大值可以被用作固定状态到经典状态集合的非经典距离，在与Hillery测度相同的程度上。当在固定状态上作用高斯噪声图时，该测量增加，即所选择的状态变得更接近经典状态。
We propose a new measure of the nonclassical distance in the case of Gaussian states. Let us consider two Gaussian states one of which is fixed and the other runs through the set of Gaussian classical states. The maximum value of the fidelity between these two states can be used as a nonclassical distance of the fixed state to the set of classical states, in the same extent as the Hillery measure. This measure increases when on the fixed state acts a Gaussian noise map i.e. the selected state becomes closer to the classical states.