Topological and Subsystem Codes on Low-Degree Graphs with Flag Qubits

@article{Chamberland2020TopologicalAS,
  title={Topological and Subsystem Codes on Low-Degree Graphs with Flag Qubits},
  author={C. Chamberland and Guanyu Zhu and Theodore J. Yoder and J. Hertzberg and A. Cross},
  journal={Physical Review X},
  year={2020},
  volume={10}
}
  • C. Chamberland, Guanyu Zhu, +2 authors A. Cross
  • Published 2020
  • Computer Science, Physics
  • Physical Review X
  • In this work we introduce two code families, which we call the heavy hexagon code and heavy square code. Both code families are implemented by assigning physical data and ancilla qubits to both vertices and edges of low degree graphs. Such a layout is particularly suitable for superconducting qubit architectures to minimize frequency collisions and crosstalk. In some cases, frequency collisions can be reduced by several orders of magnitude. The heavy hexagon code is a hybrid surface/Bacon-Shor… CONTINUE READING
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