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arXiv 1709.05765quant-phcond-mat.mes-hallcond-mat.supr-con
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超导Qutrit中的拓扑Maxwell金属带

Topological Maxwell Metal Bands in a Superconducting Qutrit

Xinsheng Tan, Dan-Wei Zhang, Qiang Liu, Guangming Xue, Hai-Feng Yu, Yan-Qing Zhu, Hui Yan, Shi-Liang Zhu, Yang Yu

摘要:

通过将凝聚态模型的动量空间映射到超导量子线路的可调参数空间,我们对拓扑Maxwell金属带进行了实验研究。一个奇异的能带结构,有效地描述了自旋1麦克斯韦方程组的成像。在麦克斯韦金属带中观察到三重简并点,称为麦克斯韦点。此外,我们的工程师和观察拓扑相变从拓扑麦克斯韦金属到一个平凡的绝缘体,并报告的第一个实验测量的陈数大于1。

英文摘要:

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. Three-fold 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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