A double transmon coupler enables a parametric iSWAP gate with 99.827% fidelity in 40 ns between transmon qubits.
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Cross-Kerr coupling in the two-photon bosonic regime of a SQUID-coupled phase qubit never vanishes due to potential asymmetry and coupler nonlinearity, with explicit limits on the number of coherent states needed for the approximation.
Entanglement is generated dynamically in two coupled superconducting qubits via Floquet-state hybridization under multiphoton resonance and can be coherently suppressed by tuning the drive amplitude.
A system-level design methodology for scalable fluxonium processors with double-transmon couplers that supports high-fidelity gates, fast reset, and dispersive readout through frequency partitioning under realistic constraints.
citing papers explorer
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High-fidelity iSWAP gate with Double Transmon Coupler
A double transmon coupler enables a parametric iSWAP gate with 99.827% fidelity in 40 ns between transmon qubits.
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Two-photon coupling via Josephson element II: Interaction dressing, cross-Kerr coupling, and limits of low-energy bosonic model
Cross-Kerr coupling in the two-photon bosonic regime of a SQUID-coupled phase qubit never vanishes due to potential asymmetry and coupler nonlinearity, with explicit limits on the number of coherent states needed for the approximation.
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Floquet Entanglement Generation in Parametrically Driven Coupled Superconducting Qubits
Entanglement is generated dynamically in two coupled superconducting qubits via Floquet-state hybridization under multiphoton resonance and can be coherently suppressed by tuning the drive amplitude.
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System-Level Design of Scalable Fluxonium Quantum Processors with Double-Transmon Couplers
A system-level design methodology for scalable fluxonium processors with double-transmon couplers that supports high-fidelity gates, fast reset, and dispersive readout through frequency partitioning under realistic constraints.