2017/09/30 by X. Q. Shao, Xiao‐Qiang Shao, J. H. Wu +4 · 1 citation
Mathematics · Physics and Astronomy · #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Dissipative system #Dynamics (music) #Mathematics #Open quantum system #Physics #Quantum #Quantum Mechanics and Applications #Quantum Zeno effect #Quantum dynamics #Quantum mechanics #Quantum optics and atomic interactions #Rydberg atom #Rydberg formula #Zeno's paradoxes #quant-ph
paper · pdf · doi:10.1103/physreva.96.062315
published as Phys. Rev. A 96, 062315 (2017) · accepted by PRA
arxiv created 2017/12/06 · openalex publication_date 2017/12/15 · arxiv updated 2017/12/20 · openalex created_date 2017/12/22 · openalex updated_date 2026/08/05
Inspired by a recent work [F. Reiter, D. Reeb, and A. S. S\orensen, Phys. Rev. Lett. 117, 040501 (2016)], we present a simplified proposal for dissipatively preparing a Greenberger-Horne-Zeilinger (GHZ) state of three Rydberg atoms in a cavity. The Z pumping is implemented under the action of the spontaneous emission of \mathrm\ensuremathΛ-type atoms and the quantum Zeno dynamics induced by strong continuous coupling. In the meantime, a dissipative Rydberg pumping breaks up the stability of the state |GHZ+\ensuremath⟩ in the process of Z pumping, making |GHZ_\ensuremath-\ensuremath⟩ the unique steady state of the system. Compared with the former scheme, the number of driving fields acting on atoms is greatly reduced and only a single-mode cavity is required. The numerical simulation of the full master equation reveals that a high fidelity \ensuremath∼98% can be obtained with the currently achievable parameters in the Rydberg-atom-cavity system.