Balanced homodyne detection with high common mode rejection ratio based on parameter compensation of two arbitrary photodiodes

被引：51

作者：

Jin, Xiaoli ^{[1
]}

Su, Jing ^{[1
]}

Zheng, Yaohui ^{[1
]}

Chen, Chaoyong ^{[1
]}

Wang, Wenzhe ^{[1
]}

Peng, Kunchi ^{[1
]}

机构：

[1] Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 18期

基金：

中国国家自然科学基金;

关键词：

SQUEEZED-LIGHT; QUANTUM; NOISE; DB;

D O I：

10.1364/OE.23.023859

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A balanced homodyne detector, with a maximum common mode rejection ratio and clearance of 75.2 dB and 37 dB, is experimentally obtained with two arbitrary photodiodes of the same model. On the basis of self-subtraction photodetector scheme, we divide the influence of photodiodes on the common mode rejection ratio into two parts, including magnitude and phase of output signal. The discrepancy of quantum efficiency and dark current affects magnitude of output signal of photodiodes, which is compensated by adjusting the splitter ratio. The difference of the equivalent capacitance and resistance affects the phase of output signal of photodiodes, which is compensated by the differential fine tuning circuit and adjustable bias voltage circuit. With these designs, the developed homodyne detector can be used for measuring accurately the squeezed state. (C) 2015 Optical Society of America

引用

页码：23859 / 23866

页数：8

共 14 条

[1]

Bowen W. P., 2005, PHYS REV A, V67

[2] Quantum information with continuous variables [J].