Accelerated and noise-resistant generation of high-fidelity steady-state entanglement with Rydberg atoms

Ye-Hong Chen, Zhi-Cheng Shi, Jie Song, Yan Xia, and Shi-Biao Zheng
Phys. Rev. A 97, 032328 – Published 20 March 2018

Abstract

Based on Lyapunov control, a scheme is proposed to accelerate dissipation dynamics for the generation of high-fidelity entanglement between two Rydberg atoms in the context of cavity QED. We first use quantum Zeno dynamics and the Rydberg antiblockade to find a unique steady state (two-atom singlet state) for the system. Then, we apply additional coherent control (ACC) fields to improve the evolution speed of the dissipative system. The ACC fields are designed based on the target state and they vanish gradually along with increasing of the fidelity; thus, the system is guaranteed to be finally stable. Additionally, the current accelerated scheme is checked to be robust against systematic and amplitude-noise errors.

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  • Received 12 October 2017
  • Revised 11 February 2018

DOI:https://doi.org/10.1103/PhysRevA.97.032328

©2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalQuantum Information, Science & Technology

Authors & Affiliations

Ye-Hong Chen1,2, Zhi-Cheng Shi1,2, Jie Song3, Yan Xia1,2,*, and Shi-Biao Zheng1,2

  • 1Department of Physics, Fuzhou University, Fuzhou 350116, China
  • 2Fujian Key Laboratory of Quantum Information and Quantum Optics, Fuzhou University, Fuzhou 350116, China
  • 3Department of Physics, Harbin Institute of Technology, Harbin 150001, China

  • *xia-208@163.com

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Issue

Vol. 97, Iss. 3 — March 2018

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