# Measuring Quantum Coherence in Multi-Slit Interference

## TL;DR

This paper proposes a practical method to measure quantum coherence in multi-slit interference experiments, enabling experimental testing of wave-particle duality relations for systems with more than two slits.

## Contribution

It introduces a novel procedure for experimentally quantifying quantum coherence in multi-slit setups, bridging a gap between theoretical measures and practical measurement.

## Key findings

- Proposed a measurement procedure for quantum coherence in multi-slit interference.
- Facilitates experimental testing of duality relations with multiple slits.
- Enhances understanding of wave-particle duality in complex quantum systems.

## Abstract

A quantitative measure of quantum coherence was recently introduced, in the context of quantum information theory. This measure has also been propounded as a good quantifier of the wave nature of quantum objects. However, actually measuring coherence in an experiment is still considered a challenge. A procedure for measuring coherence in a multi-slit interference is proposed here. It can be used for experimentally testing duality relations for interference experiments involving more than two slits.