Author

L. Tosi

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Preprint Aug 2026

Time-optimal quantum gates with bang-bang control in multilevel systems

We determine the optimal quantum manipulation protocols for implementing high-fidelity, fast single-qubit gates. We demonstrate that the time-optimal pulse sequence is a ``bang-bang''sequence: discrete pulses of either positive or negative maximum amplitude or zero. The non-adiabatic bang-bang pulse sequence minimizes...

Valentín Reparaz, Santiago Ferreyra, María José Sánchez et al. · 0 citations

Preprint Jul 2026

Optimizing LZSM protocol for high-fidelity gates in open-system fluxonium

Quantum gates based on resonant Rabi oscillations are inherently slow for small-frequency qubits. They are also prone to errors due to counter-rotating terms. However, when the anharmonicity is sufficiently high, as in the fluxonium architecture, alternative manipulation protocols can outperform standard resonant drivi...

Santiago Ferreyra, Valentín Reparaz, María José Sánchez et al. · 2 citations