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arXiv · 1805.03569

Quantum control for high-fidelity multi-qubit gates

Raymond J. Spiteri·Marina Schmidt·Joydip Ghosh·Ehsan Zahedinejad·Barry C. Sanders
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Abstract

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.

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Raymond J. Spiteri, Marina Schmidt, Joydip Ghosh, Ehsan Zahedinejad, Barry C. Sanders. 2018-05-09. Quantum control for high-fidelity multi-qubit gates. https://doi.org/10.1088/1367-2630/aae79a

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