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Updated: May 31, 2026
05:39
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
Implementation of adiabatic geometric gates with superconducting phase qubits
1National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China.
Summary
We developed a robust adiabatic geometric quantum computation strategy for superconducting qubits. This method shows high fidelity and resilience to errors, with potential for direct Berry phase detection.
Area of Science:
- Quantum computation
- Superconducting circuits
- Quantum information science
Background:
- Adiabatic quantum computation offers a robust approach to quantum information processing.
- Superconducting qubits are a leading platform for building quantum computers.
- Geometric quantum computation leverages topological properties for enhanced fault tolerance.
Purpose of the Study:
- To propose and evaluate an adiabatic geometric quantum computation strategy for superconducting phase qubits.
- To assess the fidelity and robustness of the designed quantum gates against thermal noise.
- To explore the direct detection of Berry phase in adiabatic quantum evolution.
Main Methods:
- Utilizing non-degenerate energy eigenstates in superconducting phase qubit systems.
- Simulating thermal fluctuations to evaluate quantum gate fidelity.
- Applying quantum state tomography for Berry phase detection.
- Analyzing control parameter fluctuations' impact on Berry phase measurement.
Main Results:
- The designed quantum gates demonstrated high fidelity and robustness against simulated thermal fluctuations.
- The Berry phase in the adiabatic evolution was found to be directly detectable using quantum state tomography.
- Control parameter fluctuations were analyzed for their effect on experimental Berry phase detection.
Conclusions:
- The proposed adiabatic geometric quantum computation strategy is effective and robust for superconducting qubits.
- Direct Berry phase detection via quantum state tomography is feasible.
- Understanding control parameter fluctuations is crucial for experimental implementation.
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