论文标题
解决高斯来源的量子限制
Quantum limits for resolving Gaussian sources
论文作者
论文摘要
我们通过分析确定量子cramér-rao结合了任意高斯州两个点源之间的分离的估计。我们的分析表达对于任意来源的亮度有效，它允许确定不同的资源（例如相互一致性（由热相关或位移引起）或挤压会影响最终分辨率极限的缩放，并与发射光子的平均数量相比。在实际情况下，我们发现来源的连贯状态以实现量子最佳分辨率。
We determine analytically the quantum Cramér-Rao bound for the estimation of the separation between two point sources in arbitrary Gaussian states. Our analytical expression is valid for arbitrary sources brightness, and it allows to determine how different resources, such as mutual coherence (induced by thermal correlations or displacement) or squeezing affect the scaling of the ultimate resolution limit with the mean number of emitted photons. In practical scenarios, we find coherent states of the sources to achieve quantum optimal resolution.
