Coherent temporal oscillations of macroscopic quantum states in a Josephson junction

被引：601

作者：

Yu, Y

Han, SY ^{[1
]}

Chu, X

Chu, SI

Wang, Z

机构：

[1] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

[2] Univ Kansas, Dept Chem, Lawrence, KS 66045 USA

[3] Minist Posts & Telecommun, Commun Res Lab, Kansai Adv Res Ctr, Nishi Ku, Kobe, Hyogo 65124, Japan

来源：

SCIENCE | 2002年 / 296卷 / 5569期

关键词：

D O I：

10.1126/science.1069452

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report the generation and observation of coherent temporal oscillations between the macroscopic quantum states of a Josephson tunnel junction by applying microwaves with frequencies close to the level separation. Coherent temporal oscillations of excited state populations were observed by monitoring the junction's tunneling probability as a function of time. From the data, the lower limit of phase decoherence time was estimated to be about 5 microseconds.

引用

页码：889 / 892

页数：4

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