Integer Fluxonium Qubit

doi:10.1103/PRXQuantum.5.040318

2024-11-04

PRE

Vladimir Manucharyan *

DOI：10.1103/PRXQuantum.5.040318

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摘要

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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 relaxation quality factor Q approximate to 0.7 x 10(7), even though the dielectric loss quality factor of the circuit components is in the low-105 range. The Ramsey coherence time exceeds 100 mu s, and the average fidelity of Clifford gates is benchmarked to F > 0.999. These figures are expected to improve with optimized fabrication and measurement procedures. Our work establishes a ready-to-use partially protected superconducting qubit functioning in the frequency range of conventional transmons.

期刊

PRX Quantum

IF:

论文数:

919

被引数:

9.0K

机构

Ecole Polytechnique Federale de Lausanne

学者数:

1.7W

论文数: 1.3W

被引数: 25

swiss federal institutes of technology domain

学者数:

9.0W

论文数: 8.0W

被引数: 163

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