Topological Maxwell Metal Bands in a Superconducting Qutrit

2017/09/30 by Xinsheng Tan, Dan-Wei Zhang, Qiang Liu +7 · 5 citations
Physics and Astronomy · #Computer science #Condensed matter physics #Degenerate energy levels #Maxwell's equations #Physics #Quantum and electron transport phenomena #Quantum many-body systems #Quantum mechanics #Space (punctuation) #Spin (aerodynamics) #Superconductivity #Topological Materials and Phenomena #Topological insulator #Topology (electrical circuits) #cond-mat.mes-hall #cond-mat.supr-con #quant-ph

paper · pdf · doi:10.1103/physrevlett.120.130503

published as Phys. Rev. Lett. 120, 130503 (2018) · 6 pages, 4 figures; accepted version

openalex publication_date 2018/03/28 · arxiv created 2018/04/03 · arxiv updated 2018/04/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We experimentally explore the topological Maxwell metal bands by mapping the momentum space of condensed-matter models to the tunable parameter space of superconducting quantum circuits. An exotic band structure that is effectively described by the spin-1 Maxwell equations is imaged. Threefold degenerate points dubbed Maxwell points are observed in the Maxwell metal bands. Moreover, we engineer and observe the topological phase transition from the topological Maxwell metal to a trivial insulator, and report the first experiment to measure the Chern numbers that are higher than one.

Citations

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Cited by

• Transconductance quantization in a topological Josephson tunnel junction circuit
• Emulating topological currents arising from a dipolar parity anomaly in two-dimensional optical lattices
• Topological Anderson insulators induced by random binary disorders
• Bandgap-assisted quantum control of topological edge states in a cavity
• Weyl Josephson circuits