Thermal-dephasing-tolerant generation of mesoscopic superposition states with Rydberg dressed blockade

Zheng, Ri-Hua; Su, S.-L.; Song, Jie; Li, Weibin; Xia, Yan

Abstract

Multipartite entangled states involving nonlocality are one of the most fascinating characteristics of quantum mechanics. In this work we propose a thermal-dephasing-tolerant generation of mesoscopic entangled states with Rydberg dressed atoms. We encode a logical state on dressed states rather than Rydberg states. Such treatment can increase the lifetime of multipartite entanglement coherence to around three times compared to the Rydberg-state-coding one at the same system size and therefore induce solid fidelities of mesoscopic superposition states generation. The current work theoretically verifies the advantages of using Rydberg dressed states in many-body quantum entanglement, which is helpful for large-scale quantum computation and many-body Rydberg quantum simulation.

• Journal Article Type: Article
• Acceptance Date: Sep 15, 2023
• Online Publication Date: Oct 4, 2023
• Publication Date: 2023-10
• Deposit Date: Sep 15, 2023
• Publicly Available Date: Sep 21, 2023
• Journal: Physical Review A
• Print ISSN: 2469-9926
• Electronic ISSN: 2469-9934
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 108
• Issue: 4
• Article Number: 042405
• DOI: https://doi.org/10.1103/PhysRevA.108.042405
• Keywords: Entanglement production; Nonlocality; Quantum computation; Quantum information with atoms & light; Quantum state engineering; Rydberg atoms & molecules
• Public URL: https://nottingham-repository.worktribe.com/output/25353492
• Publisher URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.042405