# Autonomous multipartite entanglement engines

## TL;DR

This paper introduces autonomous entanglement engines that generate various multipartite entangled states using only thermal baths and static interactions, advancing practical quantum information processing.

## Contribution

It proposes a general architecture for heralded generation of multipartite entangled states using incoherent thermal resources, with conditions for specific states like GHZ, Dicke, and cluster states.

## Key findings

- Able to generate GHZ, Dicke, and cluster states
- Uses only thermal baths and static interactions
- Provides conditions for target state generation

## Abstract

The generation of genuine multipartite entangled states is challenging in practice. Here we explore a new route to this task, via autonomous entanglement engines which use only incoherent coupling to thermal baths and time-independent interactions. We present a general machine architecture, which allows for the generation of a broad range of multipartite entangled states in a heralded manner. Specifically, given a target multiple-qubit state, we give a sufficient condition ensuring that it can be generated by our machine. We discuss the cases of Greenberger-Horne-Zeilinger, Dicke and cluster states in detail. These results demonstrate the potential of purely thermal resources for creating multipartite entangled states useful for quantum information processing.