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Squeezing Enhanced Optical Gyroscope in an All-fiber Platform

Meng Lon Iu, Han Liu, Amr Saher Helmy

Published Jan 1, 2025• 0 citations
Publisher

Abstract

With a 1km Sagnac fiber interferometer and a 7.5dB fiber based squeezing source, we reported the first demonstration of squeezing enhanced fiber optical gyroscope with 2.6dB of enhancement of Allan Variance beyond the shot noise.
DOI
10.1364/cleo_at.2025.pd104_2

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Abstract Fiber optic gyroscopes (FOG) based on the Sagnac effect are a valuable tool in sensing and navigation and enable accurate measurements in applications ranging from spacecraft and aircraft to self-driving vehicles such as autonomous cars. As with any classical optical sensors, the ultimate performance of these devices is bounded by the shot-noise limit (SNL). Quantum-enhanced interferometry allows us to overcome this limit using non-classical states of light. Here, we report on an entangled-photon gyroscope that uses path-entangled NOON-states (N = 2) to provide super-resolution and phase sensitivity beyond the shot-noise limit.
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