Millisecond Coherence in a Superconducting Qubit

Millisecond Coherence in a Superconducting Qubit. Somoroff, A., Ficheux, Q., Mencia, R. A., Xiong, H., Kuzmin, R., & Manucharyan, V. E. Physical Review Letters, 130(26):267001, June, 2023. Publisher: American Physical Society

Paper doi abstract bibtex

Improving control over physical qubits is a crucial component of quantum computing research. Here we report a superconducting fluxonium qubit with uncorrected coherence time 𝑇*2=1.48±0.13 ms, exceeding the state of the art for transmons by an order of magnitude. The average gate fidelity was benchmarked at 0.99991(1). Notably, even in the millisecond range, the coherence time is limited by material absorption and could be further improved with a more rigorous fabrication. Our demonstration may be useful for suppressing errors in the next generation quantum processors.

@article{somoroff_millisecond_2023,
	title = {Millisecond {Coherence} in a {Superconducting} {Qubit}},
	volume = {130},
	url = {https://link.aps.org/doi/10.1103/PhysRevLett.130.267001},
	doi = {10.1103/PhysRevLett.130.267001},
	abstract = {Improving control over physical qubits is a crucial component of quantum computing research. Here we report a superconducting fluxonium qubit with uncorrected coherence time 𝑇*2=1.48±0.13 ms, exceeding the state of the art for transmons by an order of magnitude. The average gate fidelity was benchmarked at 0.99991(1). Notably, even in the millisecond range, the coherence time is limited by material absorption and could be further improved with a more rigorous fabrication. Our demonstration may be useful for suppressing errors in the next generation quantum processors.},
	number = {26},
	urldate = {2024-12-16},
	journal = {Physical Review Letters},
	author = {Somoroff, Aaron and Ficheux, Quentin and Mencia, Raymond A. and Xiong, Haonan and Kuzmin, Roman and Manucharyan, Vladimir E.},
	month = jun,
	year = {2023},
	note = {Publisher: American Physical Society},
	pages = {267001},
}

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