Higher-Order Fabry-Pérot Interferometer from Topological Hinge States.
@article{Li2021HigherOrderFI, title={Higher-Order Fabry-P{\'e}rot Interferometer from Topological Hinge States.}, author={Chang-An Li and Song-Bo Zhang and Jian Li and Bjorn Trauzettel}, journal={Physical review letters}, year={2021}, volume={127 2}, pages={ 026803 } }
We propose an intrinsic three-dimensional Fabry-Pérot type interferometer, coined "higher-order interferometer," that is based on the chiral hinge states of second-order topological insulators and cannot be mapped to an equivalent two-dimensional setting because of higher-order topological obstructions. Quantum interference patterns in the two-terminal conductance of this interferometer are controllable not only by tuning the strength but also, particularly, by rotating the direction of the…
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