Simple electronic analog of a Josephson junction
作者:
R. W. Henry,
D. E. Prober,
A. Davidson,
期刊:
American Journal of Physics
(AIP Available online 1981)
卷期:
Volume 49,
issue 11
页码: 1035-1046
ISSN:0002-9505
年代: 1981
DOI:10.1119/1.12579
出版商: American Association of Physics Teachers
关键词: JOSEPHSON JUNCTION;ELECTRIC CONDUCTIVITY;OSCILLATOR;INTEGRATED CIRCUITS;ANALOG SYSTEMS;DEMONSTRATION PROGRAMS
数据来源: AIP
摘要:
We describe an electronic analog of a resistively shunted Josephson junction in which the quantum phase difference of a real junction is represented by the phase difference between two oscillators, each running at approximately 100 kHz. Only three integrated circuits and an external reference oscillator are required. The circuit operates on a time scale approximately 109times slower than a typical real junction and allows easy visualization of the time‐dependent quantum phenomena of the ac Josephson effect. Characteristic current–voltage curves and waveforms obtained with the analog are shown for the cases of dc and dc plus ac current bias, and for the sudden reduction of the critical current in a current‐fed, resistively loaded junction, which models a magnetically switched Josephson computer element. Other applications of the analog are discussed.
点击下载:
PDF
(1267KB)
返 回