Preparing multiparticle entangled states of NV centers via adiabatic ground-state transitions

TL;DR

This paper presents a robust adiabatic method to generate multiparticle entangled states of NV centers in a hybrid spin-mechanical system, advancing quantum information processing capabilities.

Contribution

It introduces a novel adiabatic scheme to produce GHZ- or W-type entangled states of NV spins via ground-state transitions in a collective LMG Hamiltonian.

Findings

Successful generation of GHZ and W states from initial product states.

The scheme demonstrates robustness against noise and experimental imperfections.

Potential applications in quantum information processing.

Abstract

We propose an efficient method to generate multiparticle entangled states of NV centers in a spin mechanical system, where the spins interact through a collective coupling of the Lipkin-Meshkov-Glick (LMG) type. We show that, through adiabatic transitions in the ground state of the LMG Hamiltonian, the Greenberger-Horne-Zeilinger (GHZ)-type or the W-type entangled states of the NV spins can be generated with this hybrid system from an initial product state. Because of adiabaticity, this scheme is robust against practical noise and experimental imperfection, and may be useful for quantum information processing.