# Probing geometric information using the Unruh effect in the vacuum

## TL;DR

This paper proposes a novel method to detect geometric information in vacuum by utilizing the Unruh effect, allowing observation of vacuum mode modifications without exchanging real particles.

## Contribution

It introduces a new approach to probe vacuum mode structures via accelerated quantum systems and the Unruh effect, enabling detection of geometric features without particle exchange.

## Key findings

- Demonstrates the theoretical feasibility of detecting vacuum modifications
- Shows how acceleration affects quantum excitation rates in vacuum
- Provides a framework for 'seeing in absolute darkness' using quantum effects

## Abstract

We present a new method by which, in principle, it is possible to "see in absolute darkness," i.e., without exchanging any real quanta through quantum fields. This is possible because objects modify the mode structure of the vacuum in their vicinity. The new method probes the mode structure of the vacuum through the Unruh effect, i.e., by recording the excitation rates of quantum systems that are accelerated.