A fast, low-leakage, high-fidelity two-qubit gate for a programmable superconducting quantum computer

@inproceedings{Rol2019AFL,
  title={A fast, low-leakage, high-fidelity two-qubit gate for a programmable superconducting quantum computer},
  author={M. A. Rol and F. Battistel and F. Malinowski and C. C. Bultink and B. Tarasinski and R. Vollmer and N. Haider and N. Muthusubramanian and A. Bruno and B. Terhal and L. DiCarlo},
  year={2019}
}
A common approach to realize conditional-phase (CZ) gates in transmon qubits relies on flux control of the qubit frequency to make computational states interact with non-computational ones using a fast-adiabatic trajectory to minimize leakage. We develop a bipolar flux-pulsing method with two key advantages over the traditional unipolar variant. First, the action of the bipolar pulse is robust to long-timescale linear-dynamical distortions in the flux-control line, facilitating tuneup and… Expand

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