Millisecond Coherence in a Superconducting Qubit

被引：73

作者：

Somoroff, Aaron ^{[1
,2
]}

Ficheux, Quentin ^{[1
,2
]}

Mencia, Raymond A. ^{[1
,2
]}

Xiong, Haonan ^{[1
,2
]}

Kuzmin, Roman ^{[1
,2
]}

Manucharyan, Vladimir E. ^{[1
,2
,3
]}

机构：

[1] Univ Maryland, Joint Quantum Inst, Dept Phys, College Pk, MD 20742 USA

[2] Univ Maryland, Quantum Mat Ctr, College Pk, MD 20742 USA

[3] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 130卷 / 26期

关键词：

ERROR-CORRECTION; QUANTUM; STATES;

D O I：

10.1103/PhysRevLett.130.267001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：6

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