Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics Communications

Simplified process of dissipation-based Greenberger–Horne–Zeilinger state generation with Lyapunov control

Yu Wang, Chang‐Sheng Hu, Zhi‐Cheng Shi, Bi‐Hua Huang, Jie Song, Yan Xia

Published Dec 3, 2020• 4 citations
Publisher
DOI
10.1016/j.optcom.2020.126671

Related papers

Effective Protocol for Generation of the Greenberger-Horne-Zeilinger State and Implementation of Controlled Phase Gate with Cross-Kerr Nonlinearity

Yi‐Hao Kang, Yan Xia, Pei-Min Lu

International Journal of Theoretical Physics•Aug 24, 2013•6 citations

Compact Greenberger—Horne—Zeilinger state generation via frequency combs and graph theory

Xuemei Gu, Mario Krenn

Frontiers of Physics•Nov 20, 2020•1 citation

Dissipative preparation of multipartite Greenberger-Horne-Zeilinger states of Rydberg atoms*

Chong Yang, Dongxiao Li, Xiao-Qiang Shao

The multipartite Greenberger–Horne–Zeilinger (GHZ) states play an important role in large-scale quantum information processing. We utilize the polychromatic driving fields and the engineered spontaneous emissions of Rydberg states to dissipatively drive three- and four-partite neutral atom systems into the steady GHZ states, at the presence of the next-nearest neighbor interaction of excited Rydberg states. Furthermore, the introduction of quantum Lyapunov control can help us optimize the dissipative dynamics of the system so as to shorten the convergence time of the target state, improve the robustness against the spontaneous radiations of the excited Rydberg states, and release the limiting condition for the strengths of the polychromatic driving fields. Under the feasible experimental conditions, the fidelities of three- and four-partite GHZ states can be stabilized at 99.24 % and 98.76 %, respectively.

Chinese Physics B•Dec 30, 2020•6 citations

Preparing Greenberger-Horne-Zeilinger States by Lypunov Control

D. W. Zhang, Jinghua Teng, Shujie Mu +1 more

International Journal of Theoretical Physics•Apr 1, 2021•0 citations

Dissipative engineering of a tripartite Greenberger–Horne–Zeilinger state for neutral atoms

Dongxiao Li, Chong Yang, Xiao‐Qiang Shao

The multipartite Greenberger–Horne–Zeilinger (GHZ) states are indispensable elements for various quantum information processing tasks. Here we put forward two deterministic proposals to dissipatively prepare tripartite GHZ states in a neutral atom system. The first scheme utilizes the polychromatic driving fields and the engineered spontaneous emission of Rydberg states to generate a tripartite GHZ state with a high efficiency, which is then optimized by introducing the Gaussian soft control pulse. In the second scenario, we exploit the natural spontaneous emission of the Rydberg states as a resource, thence a steady tripartite GHZ state with fidelity around 98% can be obtained by simultaneously integrating the switching driving of unconventional Rydberg pumping and the Rydberg antiblockade effect.

Quantum Engineering•May 5, 2021•7 citations

Direct conversion of a four-atom W state to a Greenberger-Horne-Zeilinger state via a dissipative process

Jie Song, Xiudong Sun, Qing-Xia Mu +3 more

We consider an open quantum system consisting of four atoms which are placed in a damped cavity. Through a dissipative dynamics process, a $W$ state can be converted into a Greenberger-Horne-Zeilinger state with deterministic probability. In addition, the interaction time need not be controlled strictly in the dynamics process. The protocol may open up a promising perspective for quantum state conversion between different classes of entanglement and cavity quantum electrodynamics systems.

Physical Review A•Aug 30, 2013•31 citations
The multipartite Greenberger–Horne–Zeilinger (GHZ) states play an important role in large-scale quantum information processing. We utilize the polychromatic driving fields and the engineered spontaneous emissions of Rydberg states to dissipatively drive three- and four-partite neutral atom systems into the steady GHZ states, at the presence of the next-nearest neighbor interaction of excited Rydberg states. Furthermore, the introduction of quantum Lyapunov control can help us optimize the dissipative dynamics of the system so as to shorten the convergence time of the target state, improve the robustness against the spontaneous radiations of the excited Rydberg states, and release the limiting condition for the strengths of the polychromatic driving fields. Under the feasible experimental conditions, the fidelities of three- and four-partite GHZ states can be stabilized at 99.24 % and 98.76 %, respectively.
The multipartite Greenberger–Horne–Zeilinger (GHZ) states are indispensable elements for various quantum information processing tasks. Here we put forward two deterministic proposals to dissipatively prepare tripartite GHZ states in a neutral atom system. The first scheme utilizes the polychromatic driving fields and the engineered spontaneous emission of Rydberg states to generate a tripartite GHZ state with a high efficiency, which is then optimized by introducing the Gaussian soft control pulse. In the second scenario, we exploit the natural spontaneous emission of the Rydberg states as a resource, thence a steady tripartite GHZ state with fidelity around 98% can be obtained by simultaneously integrating the switching driving of unconventional Rydberg pumping and the Rydberg antiblockade effect.
We consider an open quantum system consisting of four atoms which are placed in a damped cavity. Through a dissipative dynamics process, a WWW state can be converted into a Greenberger-Horne-Zeilinger state with deterministic probability. In addition, the interaction time need not be controlled strictly in the dynamics process. The protocol may open up a promising perspective for quantum state conversion between different classes of entanglement and cavity quantum electrodynamics systems.