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  • Letter
  • Open Access

Topological order in random interacting Ising-Majorana chains stabilized by many-body localization

Nicolas Laflorencie1,2, Gabriel Lemarié1,3,4, and Nicolas Macé1

  • 1Laboratoire de Physique Théorique, CNRS and Université de Toulouse, 31062 Toulouse, France
  • 2Donostia International Physics Center, Paseo Manuel de Lardizabal 4, E-20018 San Sebastián, Spain
  • 3MajuLab, CNRS-UCA-SU-NUS-NTU International Joint Research Unit, Singapore
  • 4Centre for Quantum Technologies, National University of Singapore, 117543 Singapore, Singapore

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Phys. Rev. Research 4, L032016 – Published 29 July, 2022

DOI: https://doi.org/10.1103/PhysRevResearch.4.L032016

Abstract

We numerically explore Z2-symmetric random interacting Ising-Majorana chains at high energy. A very rich phase diagram emerges with two topologically distinct many-body localization (MBL) regimes separated by a much broader thermal phase than previously found. This is a striking consequence of the avalanche theory. We further find MBL spin-glass order always associated to a many-body spectral pairing, presumably signaling a strong zero mode operator which opens fascinating perspectives for MBL-protected topological qubits.

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References (59)

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Outline

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Phys. Rev. Research 4, L032016– Published 29 July, 2022
  • Received 7 January 2022
  • Revised 19 April 2022
  • Accepted 23 June 2022
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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