# Experimental investigation of superdiffusion via coherent disordered Quantum Walks

## TL;DR

This paper experimentally investigates superdiffusive behavior in quantum walks, revealing how disorder influences energy transport dynamics with high resolution, bridging classical diffusion and quantum ballistic spreading.

## Contribution

It provides the first high-resolution experimental analysis of superdiffusion in quantum walks across different disorder regimes without decoherence.

## Key findings

- Superdiffusive behavior observed between diffusive and ballistic regimes.
- Disorder regimes can be effectively tuned by adjusting system parameters.
- High-resolution measurements distinguish between different quantum transport regimes.

## Abstract

Many disordered systems show a superdiffusive dynamics, intermediate between the diffusive one, typical of a classical stochastic process, and the so called ballistic behaviour, which is generally expected for the spreading in a quantum process. We have experimentally investigated the superdiffusive behaviour of a quantum walk (QW), whose dynamics can be related to energy transport phenomena, with a resolution which is high enough to clearly distinguish between different disorder regimes. By our experimental setup, the region between ballistic and diffusive spreading can be effectively scanned by suitably setting few degrees of freedom and without applying any decoherence to the QW evolution.