Observation of energy levels quantization in underdamped Josephson junctions above the classical-quantum regime crossover temperature

被引：111

作者：

Silvestrini, P

Palmieri, VG

Ruggiero, B

Russo, M

机构：

[1] IST NAZL FIS NUCL, I-80125 NAPLES, ITALY

[2] UNIV BERN, HIGH ENERGY PHYS LAB, CH-3012 BERN, SWITZERLAND

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.79.3046

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a clear observation of the presence of energy levels quantization in high quality Nb-AlOx-Nb underdamped Josephson junctions at temperatures above the quantum crossover temperature. This has been possible by extending the measurements of the escape rate out of the zero-voltage state at higher sweeping frequency (dI/dt up to 25 A/sec) in order to induce nonstationary conditions in the energy potential describing the junction dynamics.

引用

收藏

页码：3046 / 3049

页数：4

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