Coherence times of dressed states of a superconducting qubit under extreme driving

被引：144

作者：

Wilson, C. M. ^{[1
]}

Duty, T. ^{[1
]}

Persson, F. ^{[1
]}

Sandberg, M. ^{[1
]}

Johansson, G. ^{[1
]}

Delsing, P. ^{[1
]}

机构：

[1] Chalmers, SE-41296 Gothenburg, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.98.257003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measure longitudinal dressed states of a superconducting qubit, the single Cooper-pair box, and an intense microwave field. The dressed states represent the hybridization of the qubit and photon degrees of freedom and appear as avoided level crossings in the combined energy diagram. By embedding the circuit in an rf oscillator, we directly probe the dressed states. We measure their dressed gap as a function of photon number and microwave amplitude, finding good agreement with theory. In addition, we extract the relaxation and dephasing rates of these states.

引用

页数：4

共 25 条

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