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

arXiv:1712.10089 · Science China Physics Mechanics and Astronomy

Simulating a topological transition in a superconducting phase qubit by fast adiabatic trajectories

Tenghui Wang, Zhenxing Zhang, Liang Xiang, Zhihao Gong, Jianlan Wu, Yi Yin

Published Jan 15, 2018• 21 citations
arXivHTMLPDF
DOI
10.1007/s11433-017-9156-1

Related papers

Experiments on a Superconducting Qubit Manipulated by Fast Flux Pulses: The Issue of Non-adiabaticity

Maria Gabriella Castellano, F. Chiarello, G. Torrioli

Journal of Superconductivity and Novel Magnetism•Sep 23, 2010•2 citations

Simulation of a topological phase transition in a Kitaev chain with long-range coupling using a superconducting circuit

Ziyu Tao, Tongxing Yan, Weiyang Liu +8 more

We report an experimental work on simulating the Kitaev chain of one-dimensional $p$-wave superconductivity with long-range coupling using superconducting quantum circuits. The effective Hamiltonian of this model in the momentum space is mapped onto that of a qubit driven by a tunable microwave control field. By monitoring the dynamics of the qubit, we generate intuitive yet precise visualization of topological characteristics of different quantum phases of the system. Topological invariants can be directly deduced from the experimental results, without relying on indirect extraction from measurements such as microwave spectroscopy and temporal averaging. Therefore a much enhanced efficiency of measurement can be realized compared to other methods that are often used to simulate topological phase transitions. As a consequence, a comprehensive phase diagram covering a wide range of the parameter space is obtained. Topological phase transitions and quantum multicritical points are clearly demonstrated. In particular, new topological phases emerge as a consequence of long-range coupling. The method used here can be readily generalized to simulate more complex systems on different experimental platforms.

Physical review. B./Physical review. B•Jan 8, 2020•22 citations

Investigation of the topological quantum phase transition in a superconducting system via quantum walks

Yi-Hao Kang, Qi-Ping Su, Yu Wang +2 more

Physical Review A•May 30, 2025•8 citations

Pulse Design of Baseband Flux Control for Adiabatic Controlled-Phase Gates in Superconducting Circuits

Qi Ding, Alan V. Oppenheim, Petros T. Boufounos +4 more

Despite progress towards achieving low error rates with superconducting qubits, error-prone two-qubit gates remain a bottleneck for realizing large-scale quantum computers. Therefore, a systematic framework to design high-fidelity gates becomes imperative. One type of two-qubit gate in superconducting qubits is the controlled-phase (CPHASE) gate, which utilizes a conditional interaction between higher energy levels of the qubits controlled by a baseband flux pulse on one of the qubits or a tunable coupler. In this work, we study an adiabatic implementation of CPHASE gates and formulate the design of the control trajectory for the gate as a pulse-design problem. We show in simulation that the Chebyshev-based trajectory can, in certain cases, enable gates with gate infidelity lower by an average of 23.3% when compared to the widely used Slepian-based trajectory.

arXiv:2407.02722•Jul 3, 2024•0 citations

Adiabatic quantum simulations with superconducting qubits

Nikolaj Moll, Panagiotis Kl. Barkoutsos, Daniel J. Egger +8 more

Verhandlungen der Deutschen Physikalischen Gesellschaft•Jan 1, 2017•0 citations

Superconducting qubits with adjustable coupling, Part III: Simulating topological properties of quantum systems

P. Roushan, C. Neill, Y. Chen +19 more

Bulletin of the American Physical Society•Mar 3, 2014•0 citations
We report an experimental work on simulating the Kitaev chain of one-dimensional ppp-wave superconductivity with long-range coupling using superconducting quantum circuits. The effective Hamiltonian of this model in the momentum space is mapped onto that of a qubit driven by a tunable microwave control field. By monitoring the dynamics of the qubit, we generate intuitive yet precise visualization of topological characteristics of different quantum phases of the system. Topological invariants can be directly deduced from the experimental results, without relying on indirect extraction from measurements such as microwave spectroscopy and temporal averaging. Therefore a much enhanced efficiency of measurement can be realized compared to other methods that are often used to simulate topological phase transitions. As a consequence, a comprehensive phase diagram covering a wide range of the parameter space is obtained. Topological phase transitions and quantum multicritical points are clearly demonstrated. In particular, new topological phases emerge as a consequence of long-range coupling. The method used here can be readily generalized to simulate more complex systems on different experimental platforms.
Despite progress towards achieving low error rates with superconducting qubits, error-prone two-qubit gates remain a bottleneck for realizing large-scale quantum computers. Therefore, a systematic framework to design high-fidelity gates becomes imperative. One type of two-qubit gate in superconducting qubits is the controlled-phase (CPHASE) gate, which utilizes a conditional interaction between higher energy levels of the qubits controlled by a baseband flux pulse on one of the qubits or a tunable coupler. In this work, we study an adiabatic implementation of CPHASE gates and formulate the design of the control trajectory for the gate as a pulse-design problem. We show in simulation that the Chebyshev-based trajectory can, in certain cases, enable gates with gate infidelity lower by an average of 23.3% when compared to the widely used Slepian-based trajectory.