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Picosecond Pulses Take Control of Fluxonium
Two single-flux-quantum protocols address the leakage and gate-time tradeoff that frustrates low-frequency qubit control.
Summary
Two single-flux-quantum protocols address the leakage and gate-time tradeoff that frustrates low-frequency qubit control.
A proposed fluxonium-control strategy uses picosecond single-flux-quantum pulses from Josephson digital circuits. One protocol sends high-frequency pulse packets through the flux channel for a simpler, robust drive; a second combines phase-shifted flux and charge sequences to shorten the gate. Multilevel simulations report single-qubit fidelities above 99.99%, with the simpler protocol tolerating moderate parameter and bias changes. The work is a simulation-based control proposal rather than an experimental gate demonstration.
Why it matters
Two single-flux-quantum protocols address the leakage and gate-time tradeoff that frustrates low-frequency qubit control.
Limits and context
No additional limitation was separately recorded.
Key claims
Two single-flux-quantum protocols address the leakage and gate-time tradeoff that frustrates low-frequency qubit control.
Evidence: source-2026-11-11-014
Sources
- arXiv:2611.14358v1arXiv / Cornell University · primary research
Corrections
No corrections have been recorded for this story.