Quantum Superinductor with Tunable Nonlinearity

被引：100

作者：

Bell, M. T. ^{[1
]}

Sadovskyy, I. A. ^{[1
]}

Ioffe, L. B. ^{[1
,2
]}

Kitaev, A. Yu. ^{[3
]}

Gershenson, M. E. ^{[1
]}

机构：

[1] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[2] CNRS, LPTHE, UMR 7589, F-75252 Paris, France

[3] CALTECH, Inst Quantum Informat, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 13期

基金：

美国国家科学基金会;

关键词：

CIRCUIT;

D O I：

10.1103/PhysRevLett.109.137003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the realization of a superinductor, a dissipationless element whose microwave impedance greatly exceeds the resistance quantum R-Q. The design of the superinductor, implemented as a ladder of nanoscale Josephson junctions, enables tuning of the inductance and its nonlinearity by a weak magnetic field. The Rabi decay time of the superinductor-based qubit exceeds 1 mu s. The high kinetic inductance and strong nonlinearity offer new types of functionality, including the development of qubits protected from both flux and charge noises, fault tolerant quantum computing, and high-impedance isolation for electrical current standards based on Bloch oscillations.

引用

页数：5

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