Song Meiting, Steinmetz John, Zhang Yi, Nauriyal Juniyali, Lyons Kevin, Jordan Andrew N, Cardenas Jaime
The Institute of Optics, University of Rochester, Rochester, NY, 14627, USA.
Department of Physics and Astronomy, University of Rochester, Rochester, NY, 14627, USA.
Nat Commun. 2021 Oct 29;12(1):6247. doi: 10.1038/s41467-021-26522-2.
Optical interferometry plays an essential role in precision metrology such as in gravitational wave detection, gyroscopes, and environmental sensing. Weak value amplification enables reaching the shot-noise-limit of sensitivity, which is difficult for most optical sensors, by amplifying the interferometric signal without amplifying certain technical noises. We implement a generalized form of weak value amplification on an integrated photonic platform with a multi-mode interferometer. Our results pave the way for a more sensitive, robust, and compact platform for measuring phase, which can be adapted to fields such as coherent communications and the quantum domain. In this work, we show a 7 dB signal enhancement in our weak value device over a standard Mach-Zehnder interferometer with equal detected optical power, as well as frequency measurements with 2 kHz sensitivity by adding a ring resonator.
光学干涉测量法在精密计量中起着至关重要的作用，例如在引力波探测、陀螺仪和环境传感等领域。弱值放大能够通过放大干涉信号而不放大某些技术噪声来达到大多数光学传感器难以实现的散粒噪声极限灵敏度。我们在具有多模干涉仪的集成光子平台上实现了弱值放大的广义形式。我们的结果为构建一个更灵敏、更稳健且更紧凑的相位测量平台铺平了道路，该平台可应用于相干通信和量子领域等。在这项工作中，我们展示了在检测光功率相等的情况下，我们的弱值器件相较于标准马赫曾德尔干涉仪信号增强了7 dB，并且通过添加环形谐振器实现了灵敏度为2 kHz的频率测量。
