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
收藏
页码：889 / 892
页数：4
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