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1QBit has demonstrated near-perfect single-qubit gate fidelities of 99.99% using fluxonium qubits and inductive coupling, marking a significant step toward scalable quantum processors. The study identifies leakage as the primary source of coherent errors across both capacitive and inductive methods, providing a clear target for future optimization efforts involving SFQ pulse scheduling. This advancement directly addresses critical stability challenges required to build reliable, large-scale quantum computing architectures.
99.99% Fidelity Achieved With Fluxonium Qubits, 1QBit Reports

1QBit reports optimizing single-qubit gates for fluxonium qubits using single-flux quantum control, reaching fidelities of 99.99% with inductive coupling.
Researchers at 1QBit have achieved 99.99% fidelity in single-qubit gates using fluxonium qubits and inductive coupling, a result that pushes the boundaries of reliable quantum computation. This level of precision was attained by…
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