A quantized microwave quadrupole insulator with topologically protected corner states

Christopher W. Peterson, Wladimir A. Benalcazar, Taylor L. Hughes and Gaurav Bahl ()
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Christopher W. Peterson: University of Illinois at Urbana-Champaign
Wladimir A. Benalcazar: University of Illinois at Urbana-Champaign
Taylor L. Hughes: University of Illinois at Urbana-Champaign
Gaurav Bahl: University of Illinois at Urbana-Champaign

Nature, 2018, vol. 555, issue 7696, 346-350

Abstract: A quantized quadrupole topological insulator composed of capacitively coupled microwave resonators has corner states that are protected by bulk topology and exhibit exceptional robustness against edge deformation.

Date: 2018
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DOI: 10.1038/nature25777

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