论文标题
在开放量子系统中传感的最佳时间
Optimal time for sensing in open quantum systems
论文作者
论文摘要
我们研究了满足Gorini-Kossakowski-Sudarshan-Lindblad Master方程的开放量子系统中时间依赖的量子渔民信息（QFI）。我们还从有效的非弱点动力学的角度研究了系统的动力学，并在使用多个探针时使用它来了解QFI的缩放。我们工作的重点是如何在某些时候最大化QFI，这表明可以通过关注这些时间来实现参数估计中的最佳精度。错误分析的传播使我们能够确认并更好地理解这一想法。我们还提出了一个参数估计程序，涉及相对较低的资源消耗测量值，然后进行更高的资源消耗测量结果，并在模拟中证明它。
We study the time-dependent quantum Fisher information (QFI) in an open quantum system satisfying the Gorini-Kossakowski-Sudarshan-Lindblad master equation. We also study the dynamics of the system from an effective non-Hermitian dynamics standpoint and use it to understand the scaling of the QFI when multiple probes are used. A focus of our work is how the QFI is maximized at certain times suggesting that the best precision in parameter estimation can be achieved by focusing on these times. The propagation of errors analysis allows us to confirm and better understand this idea. We also propose a parameter estimation procedure involving relatively low resource consuming measurements followed by higher resource consuming measurements and demonstrate it in simulation.
