GENERATION OF SQUEEZED MICROWAVE STATES BY A DC-PUMPED DEGENERATE PARAMETRIC JOSEPHSON JUNCTION OSCILLATOR

被引：17
|
作者：
KAERTNER, FX
RUSSER, P
机构：
[1] Institut für Hochfrequenztechnik, Technische Universität M̈nchen, D-8000 M̈nchen 2
来源：
PHYSICAL REVIEW A | 1990年 / 42卷 / 09期
关键词：
D O I：
10.1103/PhysRevA.42.5601
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The master equation for a dc-pumped degenerate Josephson parametric amplifier is derived. It is shown that the Wigner distribution representation of this master equation can be approximated by a Fokker-Planck equation. By using this equation, the dynamical behavior of this degenerate Josephson amplifier with respect to squeezing of the radiation field is investigated. It is shown that below threshold of parametric oscillation, a squeezed vacuum state can be generated, and above threshold a second bifurcation point exists, where the device generates amplitude squeezed radiation. Basic relations between the achievable amplitude squeezing, the output power, and the operation frequency are derived. © 1990 The American Physical Society.
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页码：5601 / 5612
页数：12
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