Hybrid rf SQUID qubit based on high kinetic inductance.

Hybrid rf SQUID qubit based on high kinetic inductance.
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DOI:
10.1038/s41598-018-27154-1
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发表时间:
2018-07-03
期刊:
影响因子:
4.6
通讯作者:
Astafiev OV
Astafiev OV
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Peltonen JT;Coumou PCJJ;Peng ZH;Klapwijk TM;Tsai JS;Astafiev OV

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We report development and microwave characterization of rf SQUID (Superconducting QUantum Interference Device) qubits, consisting of an aluminium-based Josephson junction embedded in a superconducting loop patterned from a thin film of TiN with high kinetic inductance. Here we demonstrate that the systems can offer small physical size, high anharmonicity, and small scatter of device parameters. The work constitutes a non-tunable prototype realization of an rf SQUID qubit built on the kinetic inductance of a superconducting nanowire, proposed in Phys. Rev. Lett. 104, 027002 (2010). The hybrid devices can be utilized as tools to shed further light onto the origin of film dissipation and decoherence in phase-slip nanowire qubits, patterned entirely from disordered superconducting films.
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