80 citations · 457 across the 18 of their papers we have counts for
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quant-ph2018★ 6 cited
An entropic invariant for 2D gapped quantum phases
Kohtaro Kato, Pieter Naaijkens
We introduce an entropic quantity for two-dimensional (2D) quantum spin systems to characterize gapped quantum phases modeled by local commuting projector code Hamiltonians. The de…
quant-ph2018★ 8 cited
Locality of Edge States and Entanglement Spectrum from Strong Subadditivity
Kohtaro Kato, Fernando G. S. L. Brandao
We consider two-dimensional states of matter satisfying an uniform area law for entanglement. We show that the topological entanglement entropy is equal to the minimum relative ent…