论文标题
我们可以控制光子添加的超几何状态中有用的非经典性的量吗？
Can we control the amount of useful nonclassicality in a photon added hypergeometric state?
论文作者
论文摘要
从不同的角度研究了非高斯诱导操作。在这里，我们研究了光子添加（一种非高斯诱导操作）在有限尺寸量子状态下非经典性增强的作用，即借助某些量化词和非阶级性的度量。我们观察到，表征单个光子源和反古典性质量的度量导致了类似的结论，即获得所需的量子特征，必须选择所有状态参数，以便平均光子数保持较低。光子添加的超几何状态的WIGNER对数负相位和从该状态的梁splitter输出产生的两模式纠缠状态的同意，这表明可以通过增加状态参数和光子数量添加但减小状态的尺寸来增强非年龄段。原则上，降低状态的尺寸类似于散布的孔，因此有望增加非经典性。此外，Wigner函数的变化不仅在定性上说明了通过并发电势和Wigner对数负面的定量观察到的特征，还说明了量子状态的非高斯性。
Non-Gaussianity inducing operations are studied in the recent past from different perspectives. Here, we study the role of photon addition, a non-Gaussianity inducing operation, in the enhancement of nonclassicality in a finite dimensional quantum state, namely hypergeometric state with the help of some quantifiers and measures of nonclassicality. We observed that measures to characterize the quality of single photon source and anticlassicality lead to the similar conclusion, i.e., to obtain the desired quantum features one has to choose all the state parameters such that average photon numbers remains low. Wigner logarithmic negativity of the photon added hypergeometric state and concurrence of the two-mode entangled state generated at the output of a beamsplitter from this state show that nonclassicality can be enhanced by increasing the state parameter and photon number addition but decreasing the dimension of the state. In principle, decreasing the dimension of the state is analogous to holeburning and is thus expected to increase nonclassicality. Further, the variation of Wigner function not only qualitatively illustrates the same features as observed quantitatively through concurrence potential and Wigner logarithimic negativity, but illustrate non-Gaussianity of the quantum state as well.
