论文标题
增强单量子门的保真度
Augmented fidelities for single qubit gates
论文作者
论文摘要
平均栅极保真度是量化理想统一门转换与其现实实验实现之间偏差的标准性能指标。平均值是关于在整个希尔伯特空间上均匀分布的状态。我们通过分析（单量）和数值（两数数字）的分析表明，如果放松统一分布条件，被参数化分布替代了该平均值如何变化 - 极性帽和Von Mises-fisher分布以及所得的忠诚度如何可以区分某些噪声模型。特别是，我们证明，可以使用这些增强的保真度忠实地区分沿三个轴的噪声速率不同的保利通道。
An average gate fidelity is a standard performance metric to quantify deviation between an ideal unitary gate transformation and its realistic experimental implementation. The average is taken with respect to states uniformly distributed over the full Hilbert space. We analytically (single-qubit) and numerically (two-qubit) show how this average changes if the uniform distribution condition is relaxed, replaced by parametrized distributions - polar cap and von Mises-Fisher distributions - and how the resulting fidelities can differentiate certain noise models. In particular, we demonstrate that Pauli channels with different noise rates along the three axes can be faithfully distinguished using these augmented fidelities.
