Decoherence and 1/f noise in Josephson qubits -: art. no. 228304

被引：292

作者：

Paladino, E

Faoro, L

Falci, G

Fazio, R

机构：

[1] Univ Catania, NEST, INFM, I-95125 Catania, Italy

[2] Univ Catania, DMFCI, I-95125 Catania, Italy

[3] Inst Sci Interchange, I-10133 Turin, Italy

[4] INFM, I-10133 Turin, Italy

[5] NEST, INFM, I-56126 Pisa, Italy

[6] Scuola Normale Super Pisa, I-56126 Pisa, Italy

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.88.228304

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose and study a model of dephasing due to an environment of bistable fluctuators. We apply our analysis to the decoherence of Josephson qubits, induced by background charges present in the substrate, which are also responsible for the 1/f noise. The discrete nature of the environment leads to a number of new features which are mostly pronounced for slowly moving charges. Far away from the degeneracy this model for the dephasing is solved exactly.

引用

页码：228304/1 / 228304/4

页数：4

共 26 条

[1] Radio-frequency single-electron transistor as readout device for qubits: Charge sensitivity and backaction [J].