Scalable Quantum Spin Networks from Unitary Construction

TL;DR

This paper explores scalable spin network designs for quantum information transfer and entanglement, demonstrating their robustness and potential for connecting quantum processors over longer distances.

Contribution

It introduces methods to design larger, more complex spin networks for extended quantum tasks and analyzes their robustness against disorder.

Findings

Larger spin networks can facilitate long-range quantum communication.

Complex spin network designs can generate various entangled states.

Simulations show robustness of these networks against realistic disorder levels.

Abstract

Spin network systems can be used to achieve quantum state transfer with high fidelity and to generate entanglement. A new approach to design spin-chain-based spin network systems, for shortrange quantum information processing and phase-sensing, has been proposed recently in [1]. In this paper, we investigate the scalability of such systems, by designing larger spin network systems that can be used for longer-range quantum information tasks, such as connecting together quantum processors. Furthermore, we present more complex spin network designs, which can produce different types of entangled states. Simulations of disorder effects show that even such larger spin network systems are robust against realistic levels of disorder.