Benchmarking Coherent Errors in Controlled-Phase Gates due to Spectator Qubits

@article{Krinner2020BenchmarkingCE,
  title={Benchmarking Coherent Errors in Controlled-Phase Gates due to Spectator Qubits},
  author={S. Krinner and S. Lazar and A. Remm and C. K. Andersen and N. Lacroix and G. Norris and C. Hellings and M. Gabureac and C. Eichler and A. Wallraff},
  journal={arXiv: Quantum Physics},
  year={2020}
}
A major challenge in operating multi-qubit quantum processors is to mitigate multi-qubit coherent errors. For superconducting circuits, besides crosstalk originating from imperfect isolation of control lines, dispersive coupling between qubits is a major source of multi-qubit coherent errors. We benchmark phase errors in a controlled-phase gate due to dispersive coupling of either of the qubits involved in the gate to one or more spectator qubits. We measure the associated gate infidelity using… Expand

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