# On Searches for Gravitational Dark Matter with Quantum Sensors

## TL;DR

This paper explores the potential of quantum sensors to detect gravitational dark matter within a specific mass range by measuring variations in fundamental constants, highlighting a narrow window for future technological advancements.

## Contribution

It identifies a specific mass range where quantum sensors could detect gravitational dark matter through variations in proton mass, emphasizing the need for improved sensor sensitivity.

## Key findings

- Quantum sensors could detect gravitational dark matter in the $[10^{-3}, 1]$ eV mass range.
- Future atomic clocks may measure effective proton mass variations caused by dark matter.
- A narrow window exists for future sensors to improve detection capabilities.

## Abstract

The possibility of searching for dark matter with quantum sensors has recently received a lot of attention. In this short paper, we discuss the possibility of searching for gravitational dark matter with quantum sensors and identify a very narrow window of opportunity for future quantum sensors with improved sensitivity. Gravitational dark matter candidates with masses in the range $[10^{-3}, 1] \, \text{eV}$ could lead to an effective time variation of the proton mass that could be measured with, e.g., future atomic clocks.