# Cross-Cross Resonance Gate

@article{Heya2021CrossCrossRG, title={Cross-Cross Resonance Gate}, author={Kentaro Heya and Naoki Kanazawa}, journal={PRX Quantum}, year={2021} }

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…

## 2 Citations

Mitigating off-resonant error in the cross-resonance gate

- PhysicsPhysical Review A
- 2022

Off-resonant error for a driven quantum system refers to interactions due to the input drives having non-zero spectral overlap with unwanted system transitions. For the cross-resonance gate, this…

Pulse-efficient circuit transpilation for quantum applications on cross-resonance-based hardware

- PhysicsPhysical Review Research
- 2021

We show a pulse-efficient circuit transpilation framework for noisy quantum hardware. This is achieved by scaling cross-resonance pulses and exposing each pulse as a gate to remove redundant…

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