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We formulate code concatenation as the action of a unitary quantum circuit on an expanding tree geometry and find that for certain classes of gates, applied
Grace Sommers, Sarang Gopalakrishnan, Michael Gullans, David Huse
In chaotic quantum systems, the entanglement of a region A can be described in terms of the surface tension of a spacetime membrane pinned to the boundary of A
ChunJun Cao, Michael Gullans, Brad Lackey, Zitao Wang
We provide the first tensor network method for computing quantum weight enumerator polynomials in the most general form. As a corollary, if a quantum code has a
A central challenge in the verification of quantum computers is benchmarking their performance as a whole and demonstrating their computational capabilities. In
Arpit Dua, Aleksander Kubica, Liang Jiang, Steven Flammia, Michael Gullans
Kitaev's toric/surface code and its numerous variants provide promising approaches to practi- cal quantum error correction (QEC). As recently discovered, a