Enhanced sensing of non-Newtonian effects at ultrashort range with exceptional points in optomechanical systems

TL;DR

This paper introduces an optomechanical nano-gravimeter leveraging exceptional points to significantly enhance sensitivity for detecting non-Newtonian effects and weak interactions at ultrashort ranges.

Contribution

It presents a novel design of an optomechanical sensor utilizing exceptional points for ultra-sensitive force detection, surpassing traditional methods.

Findings

Sensitivity is greatly enhanced near exceptional points.

Eigenfrequency splitting is proportional to the square root of perturbation strength.

Potential applications include detecting non-Newtonian effects and weak interactions.

Abstract

We propose an optomechanical nano-gravimeter based on exceptional points. The system is a coupled cavity optomechanical system, in which the gain and loss are applied by driving the cavities with a blue detuned and red detuned electromagnetic field, respectively. When the gain and loss reach a balance, the system will show the degeneracy of exceptional points, and any perturbation will cause an eigenfrequencies split, which is proportional to the square root of the perturbation strength. Compared with the traditional optomechanical sensors, the sensitivity is greatly enhanced. This work paves the way for the design of optomechanical ultrasensitive force sensors that can be applied to detect non-Newtonian effects, high-order weak interactions, and so on.