2018/05/31 by Raymond J. Spiteri, Marina Schmidt, Joydip Ghosh +2 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1088/1367-2630/aae79a
published as New Journal of Physics, 20(11) 113009 (2018)
arxiv created 2019/05/04 · arxiv updated 2019/05/07
Quantum control for error correction is critical for the practical use of quantum computers. We address quantum optimal control for single-shot multi-qubit gates by framing as a feasibility problem for the Hamiltonian model and then solving with standard global-optimization software. Our approach yields faster high-fidelity (>99.99%) single-shot three-qubit-gate control than obtained previously, and our method has enabled us to solve the quantum-control problem for a fast high-fidelity four-qubit gate.