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quant-ph2025
Verifying the analogy between transversely coupled spin-1/2 systems and inductively-coupled fluxoniums
Wei-Ju Lin, Hyunheung Cho, Yinqi Chen +3
We report a detailed characterization of two inductively coupled superconducting fluxonium qubits for implementing high-fidelity cross-resonance gates. Our circuit stands out becau…
quant-ph2024
24 days-stable CNOT-gate on fluxonium qubits with over 99.9% fidelity
Wei-Ju Lin, Hyunheung Cho, Yinqi Chen +3
Fluxonium qubit is a promising building block for quantum information processing due to its long coherence time and strong anharmonicity. In this paper, we realize a 60 ns direct C…
quant-ph2024
Integer Fluxonium Qubit
Raymond A. Mencia, Wei-Ju Lin, Hyunheung Cho +2
We describe a superconducting qubit derived from operating a properly designed fluxonium circuit in a zero magnetic field. The qubit has a frequency of about 4 GHz and an energy re…