论文标题
辅助高斯模式激活了见证非马克维亚性的潜力
Ancillary Gaussian modes activate the potential to witness non-Markovianity
论文作者
论文摘要
我们研究了使用的模式的数量如何通过连续变化的量子动力学中的相关反流看到目睹非马克维亚进化的能力。我们首先证明存在非马克维亚高斯演变的存在，这些演变在通过动力学和单个辅助模式演变的模式之间没有显示任何复兴。然后，我们证明当考虑两种辅助模式时，这种情况如何从根本上改变。确实，我们表明，当使用三模式状态时，相同的演变可以显示沿特定两人的相关后流，而只有一种模式受到进化。这些结果可以解释为在非马克维亚性检测中的一种激活现象形式，并被证明用于两种类型的相关性，纠缠和转向，以及两类高斯进化，一个经典的噪声模型和量子布朗尼运动模型。
We study how the number of employed modes impacts the ability to witness non-Markovian evolutions via correlation backflows in continuous-variable quantum dynamics. We first prove the existence of non-Markovian Gaussian evolutions that do not show any revivals in the correlations between the mode evolving through the dynamics and a single ancillary mode. We then demonstrate how this scenario radically changes when two ancillary modes are considered. Indeed, we show that the same evolutions can show correlation backflows along a specific bipartition when three-mode states are employed, and where only one mode is subjected to the evolution. These results can be interpreted as a form of activation phenomenon in non-Markovianity detection and are proven for two types of correlations, entanglement and steering, and two classes of Gaussian evolutions, a classical noise model and the quantum Brownian motion model.
