Superconducting circuit hosts fractional fluxon states (fraxons) in a tailored Josephson potential to realize protected qudits with a STIRAP gate protocol.
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Offset-charge-tunable transmon qubit achieves 99.37% fidelity in charge-parity mapping and over 93.4% in continuous monitoring at 4 μs intervals via randomized benchmarking.
Gate voltage and occupation-dependent charge offsets appear in asymmetric gatemon junctions and modify the qubit energy spectrum and anharmonicity, with an experimental detection protocol proposed.
citing papers explorer
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Fraxonium: Fractional fluxon states for qudit encoding
Superconducting circuit hosts fractional fluxon states (fraxons) in a tailored Josephson potential to realize protected qudits with a STIRAP gate protocol.
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Characterizing charge-parity detection based on an offset-charge-tunable transmon qubit via randomized benchmarking
Offset-charge-tunable transmon qubit achieves 99.37% fidelity in charge-parity mapping and over 93.4% in continuous monitoring at 4 μs intervals via randomized benchmarking.
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Gate-dependent offset charge shifts and anharmonicity in gatemon qubits in the weak tunneling regime
Gate voltage and occupation-dependent charge offsets appear in asymmetric gatemon junctions and modify the qubit energy spectrum and anharmonicity, with an experimental detection protocol proposed.