Quantum two level systems and kondo-like traps as possible sources of decoherence in superconducting qubits

被引：53

作者：

Faoro, L ^{[1
]}

Ioffe, LB ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.96.047001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss the origin of decoherence in Josephson junction qubits. We find that two level systems in the surrounding insulator cannot be the dominant source of noise in small qubits. We argue that electron traps in the Josephson barrier with large Coulomb repulsion would emit noise that agrees both in magnitude and in temperature dependence with experimental data.

引用

页数：4

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