Pauli topological stabilizer codes from twisted quantum doubles

ORAL

Abstract

We construct a Pauli stabilizer code for every two-dimensional Abelian topological order that admits a gapped boundary. Our primary example is a Pauli stabilizer code, defined on four-dimensional qudits, belonging to the double semion (DS) phase of matter. We find an explicit finite-depth quantum circuit (with ancillary qubits) that maps the ground state subspace of the DS stabilizer code to that of the DS string-net model. The DS stabilizer code is constructed by condensing an emergent boson in a Z4 toric code, which can be implemented by making certain two-body measurements. We show that the construction of the DS stabilizer code generalizes to all twisted quantum doubles with Abelian anyons, yielding models defined on composite-dimensional qudits. Our work thus extends the classification of Pauli topological stabilizer codes beyond stacks of toric codes. We also demonstrate that certain symmetry-protected topological phases can be modeled by Pauli stabilizer codes by gauging 1-form symmetries of the twisted quantum double stabilizer codes.

*Y.-A. C is supported by the JQI fellowship. A.D. is supported by the Simons Foundation through the collaboration on Ultra-Quantum Matter (651438, XC) and by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (PHY-1733907). W.S. is supported by the National Science Foundation under award number DMR-1654340 and the Institute for Quantum Information and Matter at Caltech, and by the Simons collaboration on "Ultra-Quantum Matter". N.T. is supported by NSERC.

Presenters

  • Tyler D Ellison

    • Yale University

Authors

  • Tyler D Ellison

    • Yale University
  • Yu-An Chen

    • University of Maryland, College Park
  • Arpit Dua

    • Caltech
  • Wilbur Shirley

    • Institute for Advanced Study
  • Nathanan Tantivasadakarn

    • Harvard University
  • Dominic J Williamson

    • Stanford Univ
    • Stanford University