Cross-Cross Resonance Gate

  title={Cross-Cross Resonance Gate},
  author={Kentaro Heya and Naoki Kanazawa},
  journal={PRX Quantum},
Implementation of high-fidelity swapping operations is of vital importance to execute quantum algorithms on a quantum processor with limited connectivity. We present an efficient pulse control technique, cross-cross resonance (CCR) gate, to implement iSWAP and SWAP operations with dispersively-coupled fixed-frequency transmon qubits. The key ingredient of the CCR gate is simultaneously driving both of the coupled qubits at the frequency of another qubit, wherein the fast two-qubit interaction… 

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