Quantum noise in ideal operational amplifiers

被引：14

作者：

Courty, JM ^{[1
]}

Grassia, F ^{[1
]}

Reynaud, S ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, Ecole Normale Super, Lab Kastler Brossel, F-75252 Paris 05, France

来源：

EUROPHYSICS LETTERS | 1999年 / 46卷 / 01期

关键词：

D O I：

10.1209/epl/i1999-00558-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider a model of quantum measurement built on an ideal operational amplifier operating in the limit of infinite gain, infinite input impedance and null output impedance and with a feedback loop. We evaluate the intensity and voltage noises which have to be added to the classical amplification equations in order to fulfill the requirements of quantum mechanics. We give a description of this measurement device as a quantum network scattering quantum fluctuations from input to output ports.

引用

页码：31 / 37

页数：7