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

Bulletin of the American Physical Society

Towards proving non-classicality with a 3-qubit GHZ state in circuit QED

Lev S. Bishop, Jay Gambetta, Eran Ginossar, S. M. Girvin, Andrew Houck, Jens Koch, Andreas Nunnenkamp, David Price, Robert J. Schoelkopf, Lars Tornberg

Published Mar 19, 2009• 0 citations
OpenAlex

Related papers

Preparation of Entangled Coherent States and Correspondence Between Entanglement and Non-Classical Properties in Circuit QED

Juju Hu, Lin Xu

International Journal of Theoretical Physics•Dec 19, 2014•1 citation

One-step schemes for multiqubit GHZ states and W-class states in circuit QED

Xin Liu, Qinghong Liao, Xuexin Xu +2 more

Optics Communications•Nov 9, 2015•8 citations

Control of entanglement and non-classical effects in Circuit QED

嵇英华

•Jan 1, 2015•0 citations

Deterministic generation of Greenberger–Horne–Zeilinger entangled states of cat-state qubits in circuit QED

Chui‐Ping Yang, Zhen-Fei Zheng

We present an efficient method to generate a Greenberger-Horne-Zeilinger (GHZ) entangled state of three cat-state qubits via circuit QED. The GHZ state is prepared with three microwave cavities coupled to a superconducting transmon qutrit. Because the qutrit remains in the ground state during the operation, decoherence caused by the energy relaxation and dephasing of the qutrit is greatly suppressed. The GHZ state is created deterministically, because no measurement is involved. Numerical simulations show that the high-fidelity generation of a three-cqubit GHZ state is feasible with the present circuit QED technology. This proposal can be easily extended to create a N-cqubit GHZ state (N≥3), with N microwave or optical cavities coupled to a natural or artificial three-level atom.

arXiv:1910.08226•Optics Letters•Oct 12, 2018•29 citations

Circuit QED with phase-biased qubits

Jérôme Bourassa, Alexandre Blais, Michel Devoret +1 more

Bulletin of the American Physical Society•Mar 12, 2008•0 citations

Multiqubit Greenberger-Horne-Zeilinger state generated by synthetic magnetic field in circuit QED

Wei Feng, Da‐Wei Wang, Han Cai +1 more

We propose a scheme to generate Greenberger-Horne-Zeilinger (GHZ) state for N superconducting qubits in a circuit QED system. By sinusoidally modulating the qubit-qubit coupling, a synthetic magnetic field has been made which broken the time-reversal symmetry of the system. Directional rotation of qubit excitation can be realized in a three-qubit loop under the artificial magnetic field. Based on the special quality that the rotation of qubit excitation has different direction for single- and double-excitation loops, we can generate three-qubit GHZ state and extend this preparation method to arbitrary multiqubit GHZ state. Our analysis also shows that the scheme is robust to various operation errors and environmental noise.

arXiv:1704.02221•Apr 7, 2017•0 citations
We present an efficient method to generate a Greenberger-Horne-Zeilinger (GHZ) entangled state of three cat-state qubits via circuit QED. The GHZ state is prepared with three microwave cavities coupled to a superconducting transmon qutrit. Because the qutrit remains in the ground state during the operation, decoherence caused by the energy relaxation and dephasing of the qutrit is greatly suppressed. The GHZ state is created deterministically, because no measurement is involved. Numerical simulations show that the high-fidelity generation of a three-cqubit GHZ state is feasible with the present circuit QED technology. This proposal can be easily extended to create a N-cqubit GHZ state (N≥3), with N microwave or optical cavities coupled to a natural or artificial three-level atom.
We propose a scheme to generate Greenberger-Horne-Zeilinger (GHZ) state for N superconducting qubits in a circuit QED system. By sinusoidally modulating the qubit-qubit coupling, a synthetic magnetic field has been made which broken the time-reversal symmetry of the system. Directional rotation of qubit excitation can be realized in a three-qubit loop under the artificial magnetic field. Based on the special quality that the rotation of qubit excitation has different direction for single- and double-excitation loops, we can generate three-qubit GHZ state and extend this preparation method to arbitrary multiqubit GHZ state. Our analysis also shows that the scheme is robust to various operation errors and environmental noise.