本文選題：SNSPD　切入點(diǎn)：自動(dòng)化掃描測量系統(tǒng)　出處：《南京大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著量子通信、量子計(jì)算、量子成像以及一系列需要弱光檢測技術(shù)的發(fā)展,性能優(yōu)越的單光子探測器的需求越來越迫切。超導(dǎo)納米線單光子探測器具有響應(yīng)速度快、暗記數(shù)低、探測效率高、時(shí)間抖動(dòng)小等一系列優(yōu)點(diǎn),受到業(yè)內(nèi)廣泛的關(guān)注。測量系統(tǒng)作為單光子探測實(shí)驗(yàn)的重要組成部分,對(duì)探測結(jié)果具有舉足輕重的影。本文主要研究使用LabVIEW程序控制的SNSPD自動(dòng)化掃描測量系統(tǒng),通過編寫成熟的LabVIEW控制程序,組織各個(gè)實(shí)驗(yàn)室用儀器有序工作,實(shí)現(xiàn)超導(dǎo)納米線單光子測量系統(tǒng)的一鍵自動(dòng)化運(yùn)行,有效提高測量實(shí)驗(yàn)的工作效率。本文首先介紹了 SNSPD的原理及應(yīng)用,總結(jié)傳統(tǒng)測量系統(tǒng)存在的缺陷。然后介紹了實(shí)驗(yàn)中所使用的編程語言LabVIEW,以及使用LabVIEW控制實(shí)驗(yàn)室儀器的編程思路。接著詳細(xì)介紹了自己搭建的SNSPD自動(dòng)化掃描測量系統(tǒng),以及系統(tǒng)中所用到的各個(gè)實(shí)驗(yàn)室儀器。我們使用自制的偏振測量模塊,對(duì)掃描測量系統(tǒng)的偏振特性進(jìn)行深入分析,通過改善偏振控制器等手段,對(duì)系統(tǒng)的偏振穩(wěn)定性進(jìn)行了一定程度的優(yōu)化,為后續(xù)進(jìn)一步優(yōu)化系統(tǒng)的偏振穩(wěn)定性提供建設(shè)性的建議。另外,我們還搭建了一種寬帶微波信號(hào)的高速度遠(yuǎn)距離切換矩陣系統(tǒng)。該系統(tǒng)有效克服傳統(tǒng)切換矩陣信號(hào)最大傳輸距離受限、損耗大等缺陷,且具有信號(hào)保真度高、工作模式多樣化等優(yōu)點(diǎn),可實(shí)現(xiàn)信號(hào)切換、信號(hào)疊加等多種功能。
[Abstract]:With the development of quantum communication, quantum computation, quantum imaging and a series of low-light detection techniques, the demand of single-photon detectors with superior performance is becoming more and more urgent. A series of advantages, such as high detection efficiency, low time jitter and so on, have attracted wide attention in the industry. As an important part of the single photon detection experiment, the measurement system, This paper mainly studies the automatic scanning and measuring system of SNSPD controlled by LabVIEW program. By writing the mature LabVIEW control program, we organize the work of the instruments used in each laboratory in an orderly way. The single photon measurement system of superconducting nanowires can be operated automatically by one bond, and the efficiency of the measurement experiment can be improved. Firstly, the principle and application of SNSPD are introduced in this paper. This paper summarizes the defects of the traditional measurement system, then introduces the programming language LabVIEW used in the experiment, and the programming ideas of using LabVIEW to control the laboratory instruments. Then, it introduces in detail the SNSPD automatic scanning and measuring system built by itself. And the laboratory instruments used in the system. We use the self-made polarization measurement module to analyze the polarization characteristics of the scanning measurement system in depth, by improving the polarization controller and other means. The polarization stability of the system is optimized to a certain extent, which provides constructive suggestions for further optimizing the polarization stability of the system. We also set up a high speed and long distance switching matrix system for wideband microwave signal. The system effectively overcomes the limitation of the maximum transmission distance and the loss of the traditional switching matrix signal, and has high fidelity. It can realize signal switching, signal superposition and other functions.
【學(xué)位授予單位】：南京大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN15

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 劉江;劉晨;師紅星;王璞;;203W全光纖全保偏結(jié)構(gòu)皮秒摻銩光纖激光器[J];物理學(xué)報(bào);2016年19期

2 全治科;高業(yè)勝;;保偏光纖截止波長校準(zhǔn)裝置研制[J];宇航計(jì)測技術(shù);2016年03期

3 安輝耀;劉敦偉;耿瑞華;曾和平;趙林欣;;量子通信系統(tǒng)中基于FPGA的偏振控制[J];系統(tǒng)工程與電子技術(shù);2016年08期

4 吳青林;劉云;陳巍;韓正甫;王克逸;郭光燦;;單光子探測技術(shù)[J];物理學(xué)進(jìn)展;2010年03期

相關(guān)博士學(xué)位論文 前1條

1 郟濤;紅外超導(dǎo)納米線單光子探測器[D];南京大學(xué);2014年

相關(guān)碩士學(xué)位論文 前1條

1 曹攀;1550nm共聚焦顯微鏡研制和單光子計(jì)數(shù)器計(jì)數(shù)模型研究[D];南京大學(xué);2016年

，

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