QUANTUM LIMIT ON NOISE IN A RAMAN AMPLIFIER

被引：11
|
作者：
BATTLE, PR
SWANSON, RC
CARLSTEN, JL
机构：
来源：
PHYSICAL REVIEW A | 1991年 / 44卷 / 03期
关键词：
D O I：
10.1103/PhysRevA.44.1922
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Using Caves's theory on the quantum-noise limit in an amplifier, we consider the quantum limit on noise in a Raman amplifier. We show explicitly that the full quantum equations for the Raman interaction can be transformed into the general form for a quantum amplifier. In addition, we show that in the steady-state limit the Raman amplifier becomes a phase-insensitive amplifier. At this limit we find that the output signal-to-noise ratio is unity when one photon per mode is input. Thus we conclude that the Raman amplifier, in the phase-insensitive limit, will operate at the quantum-noise limit.
引用
收藏
页码：1922 / 1930
页数：9
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