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Deterministic Quantum Key Distribution Using Gaussian-Modulated Squeezed States

ISSN号：0253-6102
期刊名称：Communications in Theoretical Physics
时间：2011.10.15
页码：664-668
分类：TB851.9[一般工业技术—摄影技术] TP391[自动化与计算机技术—计算机应用技术;自动化与计算机技术—计算机科学与技术]
作者机构：[1]西北工业大学电子信息学院,陕西西安710072, [2]上海交通大学区域光纤通信网与新型光通信系统国家重点实验室,上海200240
相关基金：国家自然科学基金资助项目（No.61170228）
相关项目：基于光纤级联四波混频效应的频率梳型多组份纠缠源理论研究

关键词： 3D单像素相机, 现场可编程门阵列, 信号完整性, 数据采集, 压缩感知, 3D single-pixel camera, Field Programmable Gate Array（FPGA）, signal integrity, data acquisition, compressed sensing

中文摘要：

研究了在压缩感知基础上发展起来的3D单像素相机的成像机制.基于现场可编程的阵列（FPGA）和FMC子板设计了一种可以代替雪崩光电二极管（APD）单光子探测器的高速3D单像素数据采集系统,以提高现有3D单像素相机系统的数据采集速度、降低系统成本.该系统基于Xilinx公司的FPGA和4DSP公司的FMC126子卡,配合高速光电探测器来实现对光信号的高速采集,同时获得目标物体反射光的光强信息和纵向距离信息,其采样率为5 GS/s、分辨率为10 bit.系统采用脉冲采样模式,最大程度地降低了数据量和计算成本.实验结果表明：在用800 ps半脉宽的脉冲激光器作为光源时,可以得到20 cm以上的纵向分辨率,每次数字微镜阵列（DMD）调制后的采集时间由目标物体的纵向长度决定.该系统也适合激光三维成像,脉冲激光测距等方面的应用.

英文摘要：

The imaging mechanism of a 3D single-pixel camera based on compressed sensing was explored.A new 3D single-pixel system based on a Field Programmable Gate Array（FPGA） and a FMC plane was design to replace the Avalanche Photo Diode（APD） single photon detector used in exiting 3D single-pixel cameras to collect data and to improve the acquiring speed of imaging.This system was based on a FPGA from Xilinx and the FMC plane from a 4DSPs FMC126 daughter card with high-speed photodetectors and could achieve high-speed optical signal acquisition.It could get the reflected light intensity information and the longitudinal distance information of a target object at the same time with a sampling rate of 5 GS/s and a solution of 10 bit.It used a pulse-sampling mode to minimize the size of data and the computing cost.Experimental results show that the system can get 20 cm or more precise longitudinal resolution when a pulse laser（half-width is 800 ps） is used as the light source,in which the acquisition time of every Digital Micro-mirror Device（DMD） pattern is depend on the longitudinal length of the target object.The system is also can be used in the laser 3D imaging and pulse laser ranging.

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