Quantum gyroscope based on the cavity magnomechanical system

TL;DR

This paper introduces a quantum gyroscope using cavity magnomechanical systems and hybrid light-magnon interactions, achieving high-precision rotation detection with noise reduction below shot-noise limits, suitable for noisy environments.

Contribution

It presents a novel quantum gyroscope scheme employing two-mode squeezed states in cavity magnomechanics, enhancing noise resilience and performance in dissipative environments.

Findings

Significantly reduces quantum noise below shot-noise limit.

Maintains performance in non-Markovian dissipative environments.

Enables sub-microradian precision in noisy conditions.

Abstract

High-precision rotational angle measurement in noise-prone environments holds critical impor tance in aerospace engineering, military navigation, and related domains. In this paper, we propose a quantum gyroscope scheme based on a cavity magnomechanical system, which enables high precision rotation angle detection by harnessing hybrid light-magnon interactions. Central to this framework is the employment of a two-mode squeezed coherent state, generated via parametric coupling of dual quantized optical fields with collective spin excitations (magnons), serving as the quantum metrological probe. We demonstrate that this scheme can significantly reduce quantum noise to levels far below the shot-noise limit. Furthermore, in the non-Markovian case, the per formance of the quantum gyroscope in a dissipative environment does not deteriorate over time, provided that the environmental spectral density satisfies certain conditions. These findings provide critical insights for advancing miniaturized quantum gyroscopes with sub-microradian precision, addressing long-standing challenges in inertial navigation systems under strong ambient noise.