Quasi-periodic driving of a four-level system creates temporal analogs of quantum spin Hall and higher-order topological insulators, yielding quantized energy exchange rates between drives due to synthetic edge or corner modes.
Ezawa, Higher-order topological insulators and semimetals on the breathing kagome and pyrochlore lattices, Phys
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Analytical expressions and existence criteria for higher-order topological corner and edge states in two-dimensional kagome and square grid-like beam frames are presented.
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Topological energy pumping in a quasi-periodically driven four-level system
Quasi-periodic driving of a four-level system creates temporal analogs of quantum spin Hall and higher-order topological insulators, yielding quantized energy exchange rates between drives due to synthetic edge or corner modes.
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Higher-order topological corner states and edge states in grid-like frames
Analytical expressions and existence criteria for higher-order topological corner and edge states in two-dimensional kagome and square grid-like beam frames are presented.