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Robust Rydberg gate via Landau-Zener control of Förster resonance

Huang, Xi-Rong; Ding, Zong-Xing; Hu, Chang-Sheng; Shen, Li-Tuo; Li, Weibin; Wu, Huaizhi; Zheng, Shi-Biao


Xi-Rong Huang

Zong-Xing Ding

Chang-Sheng Hu

Li-Tuo Shen

Associate Professor

Huaizhi Wu

Shi-Biao Zheng


In this paper, we propose a scheme to implement the two-qubit controlled-Z gate via the Stark-tuned Förster interaction of Rydberg atoms, where the Förster defect is driven by a time-dependent electric field of a simple sinusoidal function while the matrix elements of the dipole-dipole interaction are time independent. It is shown that when the system is initially in a specific state, it makes a cyclic evolution after a preset interaction time, returning to the initial state, but picks up a phase, which can be used for realizing a two-atom controlled-Z gate. Due to the interference of sequential Landau-Zener transitions, the population and phase of the state is quasideterministic after the cyclic evolution and therefore the gate fidelity is insensitive to fluctuations of the interaction time and the dipole-dipole matrix elements. Feasibility of the scheme realized with Cs atoms is discussed in detail, which shows that the two-qubit gate via Landau-Zener control can be realized with the state-of-the-art experimental setup.


Huang, X., Ding, Z., Hu, C., Shen, L., Li, W., Wu, H., & Zheng, S. (2018). Robust Rydberg gate via Landau-Zener control of Förster resonance. Physical Review A, 98(5), Article 052324.

Journal Article Type Article
Acceptance Date Oct 23, 2018
Online Publication Date Nov 19, 2018
Publication Date Nov 19, 2018
Deposit Date Nov 19, 2018
Publicly Available Date Nov 20, 2018
Journal Physical Review A
Print ISSN 2469-9926
Electronic ISSN 2469-9934
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 98
Issue 5
Article Number 052324
Public URL
Publisher URL


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