论文标题
通过纠缠的测量最小化反作用
Minimizing back-action through entangled measurements
论文作者
论文摘要
当在不断发展的相干量子系统上测量可观察到的可观察到，第一个测量通常会改变第二个的统计数据，这被称为测量反作用。我们介绍并推动其理论和实验限制，一种新型的反作用逃避方法，从而在系统的几个副本上进行了纠缠的集体测量。该方法的灵感来自于用于测量量子工作问题的类似想法[perarnau-llobet \ textit {et al}。莱特牧师。 \ textbf {118}，070601（2017）]。通过利用纠缠作为资源，我们表明与所有以前的方案相比，反作用可以极度抑制。重要的是，可以在高度连贯的过程中消除反作用。
When an observable is measured on an evolving coherent quantum system twice, the first measurement generally alters the statistics of the second one, which is known as measurement back-action. We introduce, and push to its theoretical and experimental limits, a novel method of back-action evasion, whereby entangled collective measurements are performed on several copies of the system. This method is inspired by a similar idea designed for the problem of measuring quantum work [Perarnau-Llobet \textit{et al}., (https://doi.org/10.1103/PhysRevLett.118.070601) Phys. Rev. Lett. \textbf{118}, 070601 (2017)]. By utilizing entanglement as a resource, we show that the back-action can be extremely suppressed compared to all previous schemes. Importantly, the back-action can be eliminated in highly coherent processes.
