• Corpus ID: 238634148

Symmetry-Protected Infinite-Temperature Quantum Memory from Subsystem Codes

@inproceedings{Wildeboer2021SymmetryProtectedIQ,
  title={Symmetry-Protected Infinite-Temperature Quantum Memory from Subsystem Codes},
  author={Julia S. Wildeboer and Thomas Iadecola and Dominic J. Williamson},
  year={2021}
}
We study a mechanism whereby quantum information present in the initial state of a quantum many-body system can be protected for arbitrary times due to a combination of symmetry and spatial locality. Remarkably, the mechanism is sufficiently generic that the dynamics can be fully ergodic upon resolving the protecting symmetry and fixing the encoded quantum state, resulting in an infinite-temperature quantum memory. After exemplifying the mechanism in a strongly nonintegrable two dimensional (2D… 

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