Dissipative stabilization of high-dimensional GHZ states for neutral atoms

作者：Yue Zhao, Yu-Qing Yang, Weibin Li, Xiao‐Qiang Shao · 发表于：Applied Physics Letters · 年份：2024 · DOI：10.1063/5.0192602 · 被引用次数：19 · 研究领域：Cold Atom Physics and Bose-Einstein Condensates、Quantum Information and Cryptography、Neural Networks and Reservoir Computing

High-dimensional quantum entanglement characterizes the entanglement of quantum systems within a larger Hilbert space, introducing more intricate and complex correlations among the entangled particles' states. The high-dimensional Greenberger–Horne–Zeilinger (GHZ) state, symbolic of this type of entanglement, is of significant importance in various quantum information processing applications. This study proposes integrating a neutral atom platform with quantum reservoir engineering to generate a high-dimensional GHZ state deterministically. Leveraging the advantages of neutral atoms in a modified unconventional Rydberg pumping mechanism, combined with controlled dissipation, we achieve a three-dimensional GHZ state with a fidelity surpassing 99% through multiple pump and dissipation cycles. This innovative approach paves the way for experimentally feasible, deterministic preparation of high-dimensional GHZ states in Rydberg atom systems, thereby advancing the capabilities of quantum information processing.