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arXiv · 1802.02243

Topological phase transition measured in a dissipative metamaterial

Eric I. Rosenthal·Nicole K. Ehrlich·Mark S. Rudner·Andrew P. Higginbotham·K. W. Lehnert
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Abstract

We construct a metamaterial from radio-frequency harmonic oscillators, and find two topologically distinct phases resulting from dissipation engineered into the system. These phases are distinguished by a quantized value of bulk energy transport. The impulse response of our circuit is measured and used to reconstruct the band structure and winding number of circuit eigenfunctions around a dark mode. Our results demonstrate that dissipation can lead to topological transport in a much wider class of physical systems than considered before.

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Eric I. Rosenthal, Nicole K. Ehrlich, Mark S. Rudner, Andrew P. Higginbotham, K. W. Lehnert. 2018-06-18. Topological phase transition measured in a dissipative metamaterial. https://doi.org/10.1103/physrevb.97.220301

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