Luis Aina, AlfredoMorales, IreneRivas Vargas, Ángel2023-06-182023-06-182016-07-181050-294710.1103/PhysRevA.94.013830https://hdl.handle.net/20.500.14352/24580©2016 American Physical Society. We thank Prof. L. Pezzé for helpful comments. We acknowledge financial support from Spanish Ministerio de Economía y Competitividad Projects No. FIS2012-33152 and No. FIS2012-35583, and from the Comunidad Autónoma de Madrid research consortium QUITEMAD+ Grant No. S2013/ICE-2801.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.engjournal articlehttp://dx.doi.org/10.1103/PhysRevA.94.013830http://journals.aps.org/open access535Heisenberg limitInterferometerPropagation statesLightSensitivityStatisticsNoiseÓptica (Física)2209.19 Óptica Física