Quantum hybrid optomechanical inertial sensing

TL;DR

This paper proposes a quantum hybrid inertial sensor combining optomechanical and cold atom interferometry to achieve high accuracy, broad bandwidth, and enhanced robustness for inertial measurements.

Contribution

It introduces a novel sensor fusion approach that leverages the strengths of both optomechanical sensors and cold atom interferometers for improved inertial sensing.

Findings

Potential noise floor at nano-g levels from DC to 1 kHz

Enhanced measurement bandwidth and robustness

Design guidelines for optimal acceleration sensitivity

Abstract

We discuss the design of quantum hybrid inertial sensor that combines an optomechanical inertial sensor with the retro-reflector of a cold atom interferometer. This sensor fusion approach provides absolute and high accuracy measurements with cold atom interferometers, while utilizing the optomechanical inertial sensor at frequencies above the repetition rate of the atom interferometer. This improves the overall measurement bandwidth as well as the robustness and field deployment capabilities of these systems. We evaluate which parameters yield an optimal acceleration sensitivity, from which we anticipate a noise floor at nano-g levels from DC to 1 kHz.