论文标题
偏斜基于信息的连贯性产生量子通道的能力
Skew information-based coherence generating power of quantum channels
论文作者
论文摘要
我们研究量子通道适用于不一致状态时产生量子相干性的能力。我们将一般量子通道的相干产生能力（CGP）定义为基于基于偏斜的基于信息的相干度量的量子通道产生的平均相干性。我们明确介绍了CGP的任何任意有限维统一通道的分析公式。我们得出CGP比单位组的平均值，并研究了归一化CGP的典型性。此外，我们为单一通道的凸组合提供了CGP的上限。提供了详细的示例，以准确计算与特定量子门和某些量子通道有关的单一通道的CGP值。
We study the ability of a quantum channel to generate quantum coherence when it applies to incoherent states. We define the measure of coherence generating power (CGP) for a generic quantum channel to be the average coherence generated by the quantum channel acting on a uniform ensemble of incoherent states based on the skew information-based coherence measure. We present explicitly the analytical formulae of the CGP for any arbitrary finite dimensional unitary channels. We derive the mean value of the CGP over the unitary groups and investigate the typicality of the normalized CGP. Furthermore, we give an upper bound of the CGP for the convex combinations of unitary channels. Detailed examples are provided to calculate exactly the values of the CGP for the unitary channels related to specific quantum gates and for some qubit channels.
