Generating large-scale Greenberger-Horne-Zeilinger-like states in lattice spin systems

TL;DR

This paper proposes a scalable method using global Floquet engineering to generate large-scale GHZ-like entangled states in lattice spin systems, overcoming previous scalability challenges and applicable to various interaction ranges.

Contribution

A universal scheme for creating large-scale GHZ-like states in lattice spin systems using only global operations, enhancing scalability and practicality.

Findings

Scheme is applicable to systems with arbitrary interaction ranges.

Requires only global operations, simplifying experimental implementation.

Enables large-scale entangled state generation for quantum technologies.

Abstract

Greenberger-Horne-Zeilinger (GHZ) state is a typical maximally entangled state which is pursued in both fundamental research and emerging quantum technologies. Preparing large-scale GHZ states in lattice spin systems is particularly appealing for quantum advantages, but conventional schemes face great challenges in scalability. Here we propose a universal and scalable scheme to generate large-scale GHZ-like states, which share similar entanglement and metrological properties with standard GHZ states, in lattice spin systems through global Floquet engineering. Our scheme requires only global operations and shows great advantage for large particle number. It is applicable to systems with arbitrary interaction ranges, offering a practical pathway for large-scale implementation of many-body entangled states in various systems.