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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
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Programmable higher-order nonequilibrium topological phases on a superconducting quantum processor
Haoran Qian1,2,3, Ming Gong1,2,3, Jiahui Zhang4,5
1Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei, China.
Science (New York, N.Y.)
|November 27, 2025
Summary
Researchers implemented higher-order topological phases using a programmable quantum processor. They developed a method to identify unique nonequilibrium topological features, enabling exploration of exotic quantum matter.
Area of Science:
- Condensed Matter Physics
- Quantum Information Science
Background:
- Topological phases of matter are crucial for fundamental science and technological applications.
- Higher-order topological phases exhibit unique properties beyond traditional topological insulators.
Purpose of the Study:
- To implement equilibrium and nonequilibrium higher-order topological phases.
- To explore quantum programming of these phases on a superconducting quantum processor.
- To introduce a universal method for identifying nonequilibrium topological features.
Main Methods:
- Utilized a two-dimensional programmable superconducting quantum processor.
- Constructed quantum circuits with over 50 cycles of Floquet operators on a 6x6 qubit array.
- Measured chiral density dynamics to detect topological features.
Main Results:
- Successfully implemented both equilibrium and nonequilibrium higher-order topological phases.
- Demonstrated quantum programming of nonequilibrium higher-order topological phases.
- Identified Floquet corner topological invariants and π-energy topological corner modes.
Conclusions:
- Programmable quantum processors can be used to study exotic higher-order topological phases.
- The developed method provides a universal approach for identifying nonequilibrium topological features.
- This research advances the exploration of topological matter in quantum systems.
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