An Experiment for Observing Quantum Gravity Phenomena using Twin Table-Top 3D Interferometers

TL;DR

This paper proposes a novel tabletop experiment using twin 3D interferometers to detect quantum gravity effects, gravitational waves, and dark matter, with high sensitivity surpassing previous efforts.

Contribution

It models expected signals from quantum gravity and details the design and sensitivity of a new experimental setup to observe these phenomena.

Findings

Estimated sensitivity of 10^{-19} m/√Hz in 1-250 MHz band

Potential to observe quantum gravity fluctuations and MHz gravitational waves

Enhanced detection capabilities over previous experiments

Abstract

Theories of quantum gravity based on the holographic principle predict the existence of quantum fluctuations of distance measurements that accumulate and exhibit correlations over macroscopic distances. This paper models an expected signal due to this phenomenology, and details the design and estimated sensitivity of co-located twin table-top 3D interferometers being built to measure or constrain it. The experiment is estimated to be sensitive to displacements $\sim10^{-19}\,\rm{m}/\sqrt{\rm{Hz}}$ in a frequency band between 1 and 250 MHz, surpassing previous experiments and enabling the possible observation of quantum gravity phenomena. The experiment will also be sensitive to MHz gravitational waves and various dark matter candidates.