论文标题
实验量子增强响应函数估计
Experimental quantum-enhanced response function estimation
论文作者
论文摘要
表征系统通常需要学习其对应用领域的响应功能。这种知识植根于对守时基准反应和插值以在任意值访问预测的实验评估。众所周知，量子计量资源可以增强评估这些基准点，但对改进功能估计的含义直到最近才被探索，并且尚未得到证明。在这里，我们显示了基于光子成就的功能估计的实验实现。液晶对电压的相位响应已通过量子和经典相位估计重建，提供了前者优越性的证据，并突出了核准统计误差与插值误差之间的相互作用。我们的结果表明，应如何成功地使用量子资源来访问连续信号中包含的丰富信息。
Characterizing a system often demands learning its response function to an applied field. Such knowledge is rooted on the experimental evaluation of punctual fiducial response and interpolation to access prediction at arbitrary values. Quantum metrological resources are known to provide enhancement in assessing these fiducial points, but the implications for improved function estimation have only recently been explored, and have not been yet demonstrated. Here we show an experimental realization of function estimation based on a photonic achitecture. The phase response of a liquid-crystal to a voltage has been reconstructed by means of quantum and classical phase estimation, providing evidence of the superiority of the former and highlighting the interplay between punctual statistical error and interpolation error. Our results show how quantum resources should successfully be employed to access the rich information contained in continuous signals.
