Quantum transitions of a small Josephson junction array

被引：1

作者：

van der Wal, CH ^{[1
]}

Kuiper, P ^{[1
]}

Mooij, JE ^{[1
]}

机构：

[1] Delft Univ Technol, Appl Phys & DIMES, NL-2628 CJ Delft, Netherlands

来源：

PHYSICA B | 2000年 / 280卷 / 1-4期

关键词：

Josephson effect; macroscopic quantum mechanics; microwave spectroscopy; single-charge effects;

D O I：

10.1016/S0921-4526(99)01643-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have experimentally studied a small Josephson junction array in the presence of microwave irradiation. The array has comparable energy scales for single-charge effects and the Josephson effect, resulting in a discrete set of macroscopic eigenenergy levels. Excitation of the array by low-power microwaves is possible at frequencies where the photon energy matches the level spacing. The microwave frequency and amplitude dependence show that the excitation mechanism involves resonant quantum coherent dynamics of the array. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：243 / 244

页数：2

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