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 high-fidelity quantum operations with fluxonium qubits: Part II-experimental progress

Hsiang‐Sheng Ku, Gengyan Zhang, Tenghui Wang, Wenlong Yu, Hao Deng, Jingwei Zhou, Yingshan Zhang, Hantao Sun, Zhijun Song, Xiaohang Zhang, Chengchun Tang, Ran Gao, Hua Xu, Zhisheng Li, Jin Qin, Jiang Xun, Xing Zhu, Hui‐Hai Zhao, Feng Wu, Dawei Ding, Chunqing Deng

Published Mar 2, 2020• 0 citations
OpenAlex

Related papers

Towards high-fidelity quantum operations with fluxonium qubits: Part I-design and simulation

Hsiang‐Sheng Ku, Gengyan Zhang, Tenghui Wang +18 more

Bulletin of the American Physical Society•Mar 2, 2020•0 citations

Experimental realization of ultra-high fidelity qubit operations with tunable fluxonium qubits

Tenghui Wang, Jin Qin, Hao Deng +22 more

Bulletin of the American Physical Society•Mar 17, 2021•0 citations

High-fidelity gates on fluxonium qubits

Quentin Ficheux, Haonan Xiong, Aaron Somoroff +4 more

Bulletin of the American Physical Society•Mar 17, 2021•0 citations

High-fidelity entangling gates for fluxonium qubits

Feng Wu, Dawei Ding, Tenghui Wang +8 more

Bulletin of the American Physical Society•Mar 17, 2021•0 citations

Crosstalk in Multi-Qubit Fluxonium Architectures with Transmon Couplers

Martijn F. S. Zwanenburg, Christian Kraglund Andersen

In recent years, several architectures have been proposed for implementing two-qubit operations on fluxonium superconducting qubits. A particularly promising approach, which was demonstrated experimentally by Refs. [1,2], employs a transmon superconducting qubit as a tunable coupler between the fluxonium qubits. These experiments have shown that the transmon coupler enables fast, high-fidelity two-qubit operations while suppressing unwanted ZZ crosstalk between the fluxonium qubits. In this work, we numerically study the scalability of this architecture. We find that, when trivially scaling this architecture, crosstalk from spectator qubits limits the gate fidelity to below 90%. We show that these spectator errors can be reduced to below $10^{-4}$ by reducing the coupling strength and by dynamically tuning transmons that are not used for a two-qubit operation to an off position. We further investigate the resilience of the operation to direct capacitive coupling between the transmon couplers and to microwave crosstalk.

quant-pharXiv:2603.09870•Mar 11, 2026•0 citations

Recent progress of the fluxonium qubit

Michel Devoret

Bulletin of the American Physical Society•Mar 21, 2013•0 citations
In recent years, several architectures have been proposed for implementing two-qubit operations on fluxonium superconducting qubits. A particularly promising approach, which was demonstrated experimentally by Refs. [1,2], employs a transmon superconducting qubit as a tunable coupler between the fluxonium qubits. These experiments have shown that the transmon coupler enables fast, high-fidelity two-qubit operations while suppressing unwanted ZZ crosstalk between the fluxonium qubits. In this work, we numerically study the scalability of this architecture. We find that, when trivially scaling this architecture, crosstalk from spectator qubits limits the gate fidelity to below 90%. We show that these spectator errors can be reduced to below 10−410^{-4}10−4 by reducing the coupling strength and by dynamically tuning transmons that are not used for a two-qubit operation to an off position. We further investigate the resilience of the operation to direct capacitive coupling between the transmon couplers and to microwave crosstalk.