Nonlinear fiber gyroscope for quantum metrology

TL;DR

This paper investigates a nonlinear fiber gyroscope's ability to surpass quantum limits in signal detection, analyzing its performance with practical and ideal quantum states.

Contribution

It introduces the use of nonlinear fiber gyroscopes for enhanced quantum metrology, comparing practical field states with ideal quantum probes.

Findings

Nonlinear gyroscopes can outperform linear ones in quantum limit detection.

Practical states like coherent and squeezed states are effective in the nonlinear setup.

Comparison shows advantages over traditional linear gyroscopes.

Abstract

We examine the performance of a nonlinear fiber gyroscope for improved signal detection beating the quantum limits of its linear counterparts. The performance is examined when the nonlinear gyroscope is illuminated by practical field states, such as coherent and quadrature squeezed states. This is compared with the case of more ideal probes such as photon-number states.