Gravitational waves detection with exceptional points in micro cavities

TL;DR

This paper proposes a novel gravitational wave detector utilizing exceptional points in micro cavities, offering enhanced sensitivity, broad frequency coverage, and room temperature operation, suitable for micro device integration.

Contribution

It introduces a new GW detection method based on exceptional points in micro cavities, improving sensitivity and operational conditions over existing detectors.

Findings

Enhanced eigenfrequency splitting near EPs amplifies GW signals.

Room temperature operation enables practical micro-scale detectors.

Broad frequency band coverage improves detection versatility.

Abstract

Here we propose a new gravitational waves(GWs) detector in broad frequency band, which is operated at exceptional points(EPs) in micro cavities. The detected signal is an eigenfrequency split of the mechanical modes caused by the spatial strain. Due to the complex square root topology near the EP, the splitting is greatly enhanced for sufficiently small perturbations. Compared to current strategies, it can be achieved at the room temperature and has advantages in micro device scale, wide frequency band and higher sensitivity.