Subsystem symmetries, quantum cellular automata, and computational phases of quantum matter

@article{Stephen2018SubsystemSQ,
  title={Subsystem symmetries, quantum cellular automata, and computational phases of quantum matter},
  author={David T. Stephen and Hendrik Poulsen Nautrup and Juan Bermejo-Vega and J. Eisert and R. Raussendorf},
  journal={arXiv: Quantum Physics},
  year={2018}
}
  • David T. Stephen, Hendrik Poulsen Nautrup, +2 authors R. Raussendorf
  • Published 2018
  • Physics, Mathematics, Computer Science
  • arXiv: Quantum Physics
  • Quantum phases of matter are resources for notions of quantum computation. In this work, we establish a new link between concepts of quantum information theory and condensed matter physics by presenting a unified understanding of symmetry-protected topological (SPT) order protected by subsystem symmetries and its relation to measurement-based quantum computation (MBQC). The key unifying ingredient is the concept of quantum cellular automata (QCA) which we use to define subsystem symmetries… CONTINUE READING
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