Computational universality of symmetry-protected topologically ordered cluster phases on 2D Archimedean lattices
ORAL
Abstract
Which symmetry-protected topologically ordered (SPTO) ground states can be used for universal measurement-based quantum computation in a similar fashion to the 2D cluster state? 2D SPTO states are classified not only by global on-site symmetries but also by subsystem symmetries, which are fine-grained symmetries dependent on the lattice geometry. Recently, all states within so-called SPTO cluster phases on the square and hexagonal lattices have been shown to be universal, based on the presence of subsystem symmetry and associated structures of quantum cellular automata. Motivated by this, we analyze the computational capability of SPTO cluster phases on all vertex-translative 2D Archimedean lattices. There are four subsystem symmetries here called ribbon, cone, fractal, and 1-form symmetries, and the former three are fundamentally in one-to-one correspondence with three classes of Clifford quantum cellular automata. We conclude that nine out of the eleven Archimedean lattices support universal cluster phases protected by one of the former three symmetries, while the remaining lattices possess 1-form symmetry and have a different capability related to error correction.
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Presenters
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Austin Daniel
University of New Mexico
Authors
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Austin Daniel
University of New Mexico
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Rafael Alexander
Center for Quantum Information and Control, Univ of New Mexico, Center for Quantum Information and Control, University of New Mexico, University of New Mexico
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Akimasa Miyake
University of New Mexico