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Enhanced on-chip phase measurement by inverse weak value amplification.

ABSTRACT: 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.

SUBMITTER: Song M

PROVIDER: S-EPMC8556267 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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Enhanced on-chip phase measurement by inverse weak value amplification.

Song Meiting M Steinmetz John J Zhang Yi Y Nauriyal Juniyali J Lyons Kevin K Jordan Andrew N AN Cardenas Jaime J

Nature communications 20211029 1

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 ...[more]

PMID: 34716353

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