# Experimental demonstration of a measurement-based realisation of a quantum channel

## TL;DR

This paper experimentally demonstrates a measurement-based method to realize quantum channels using a photonic setup, enabling simulation of open quantum systems with potential for scalable quantum computing applications.

## Contribution

It introduces a novel measurement-based approach to implement quantum channels, validated through photonic experiments on amplitude and phase damping channels.

## Key findings

- Experimental realization matches theoretical predictions
- Method can realize various quantum channels
- Potential for scalable quantum system simulations

## Abstract

We introduce and experimentally demonstrate a method for realising a quantum channel using the measurement-based model. Using a photonic setup and modifying the bases of single-qubit measurements on a four-qubit entangled cluster state, representative channels are realised for the case of a single qubit in the form of amplitude and phase damping channels. The experimental results match the theoretical model well, demonstrating the successful performance of the channels. We also show how other types of quantum channels can be realised using our approach. This work highlights the potential of the measurement-based model for realising quantum channels which may serve as building blocks for simulations of realistic open quantum systems.