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Room-temperature optically pumped InAs/GaAs quantum dots microdisk lasers on SiO2/Si chip

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Journal of Semiconductors 2018年第8期39卷 53-56页

作者： Pengyi Yue Xiuming Dou xiangbin su Zhichuan Niu Baoquan sun Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China University of Chinese Academy of Sciences Beijing 100049 China

We report on room temperature continuous-wave optically pumped InAs/GaAs quantum dot whispering gallery mode microdisk lasers, heterogeneously integrated on silica/silicon chips. The microdisks are fabricated by photolithography and inductively coupled plasma etching. The lasing wavelength is approximately 1200 nm and the obtained lowest laser threshold is approximately 28 μW. The experimental results show an approach of possible integrated Ⅲ–Ⅴ optical active materials on silica/silicon chip for low threshold WGM microdisk lasers.

关键词： quantum dot whispering gallery mode laser

Bright semiconductor single-photon sources pumped by heterogeneously integrated micropillar lasers with electrical injections

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Light(Science & Applications) 2023年第3期12卷 489-496页

作者： Xueshi Li Shunfa Liu Yuming Wei Jiantao Ma Changkun Song Ying Yu Rongbin su Wei Geng Haiqiao Ni Hanqing Liu xiangbin su Zhichuan Niu You-ling Chen Jin Liu State Key Laboratory of Optoelectronic Materials and Technologies School of PhysicsSchool of Electronics and Information TechnologySun Yat-sen University510275GuangzhouChina Hisilicon Research Huawei Technologies Co.Ltd518129ShenzhenChina State Key Laboratory for superlattice and Microstructures State Key Laboratory on Integrated OptoelectronicsInstitute of SemiconductorsChinese Academy of Sciences100083BeijingChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences100049BeijingChina

The emerging hybrid integrated quantum photonics combines the advantages of different functional components into a single chip to meet the stringent requirements for quantum information *** the tremendous progress in hybrid integrations of III-V quantum emitters with silicon-based photonic circuits and superconducting single-photon detectors,on-chip optical excitations of quantum emitters via miniaturized lasers towards single-photon sources(SPSs)with low power consumptions,small device footprints,and excellent coherence properties is highly desirable yet *** this work,we present realizations of bright semiconductor SPSs heterogeneously integrated with on-chip electrically-injected *** from previous one-by-one transfer printing technique implemented in hybrid quantum dot(QD)photonic devices,multiple deterministically coupled QD-circular Bragg Grating(CBG)SPSs were integrated with electrically-injected micropillar lasers at one time via a potentially scalable transfer printing process assisted by the wide-field photoluminescence(PL)imaging *** pumped by electrically-injected microlasers,pure single photons are generated with a high-brightness of a count rate of 3.8 M/s and an extraction efficiency of 25.44%.such a high-brightness is due to the enhancement by the cavity mode of the CBG,which is confirmed by a Purcell factor of *** work provides a powerful tool for advancing hybrid integrated quantum photonics in general and boosts the developments for realizing highly-compact,energy-efficient and coherent SPSs in particular.

关键词： pumped quantum photon

Fiber coupled high count-rate single-photon generated from InAs quantum dots

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Journal of Semiconductors 2021年第7期42卷 83-87页

作者： Yao Chen Shulun Li Xiangjun Shang xiangbin su Huiming Hao Jiaxin Shen Yu Zhang Haiqiao Ni Ying Ding Zhichuan Niu State Key Laboratory of Photon-Technology in Western China Energy Northwest UniversityXi’an 710069China Institute of Photonics&Photon-Technology Northwest UniversityXi'an 710069China State Key Laboratory for superlattice and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Beijing Academy of Quantum Information Sciences Beijing 100193China School of Microelectronics Xidian University and The State Key Discipline Laboratory of Wide Band Gap Semiconductor TechnologyXi’an 710071China

In this work,we achieve high count-rate single-photon output in single-mode(SM)optical *** and dilute InAs/GaAs quantum dots(QDs)are embedded in a GaAs/AlGaAs distributed Bragg reflector(DBR)with a micro-pillar cavity,so as to improve their light emission extraction in the vertical direction,thereby enhancing the optical SM fiber’s collection capabil-ity(numerical aperture:0.13).By tuning the temperature precisely to make the quantum dot exciton emission resonant to the micro-pillar cavity mode(Q~1800),we achieve a fiber-output single-photon count rate as high as 4.73×10^(6) counts per second,with the second-order auto-correlation g2(0)remaining at 0.08.

关键词： single-photon source fiber-output high count rate

分子束外延生长的GaSb热光伏电池器件特性研究（英文）

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红外与激光工程 2021年第3期50卷 307-314页

作者：郑大农苏向斌徐应强牛智川中国科学院半导体研究所超晶格国家重点实验室中国科学院大学材料学院与光电技术学院

利用分子束外延的方法在GaSb衬底上生长GaSb热光伏电池单元,制作了两种不同的1 cm×1 cm面积尺寸的热光伏电池单元,它们有着不同的电极形状。通过不断优化分子束外延的生长条件,以期得到高质量的GaSb外延层。AFM图中显示的表面形貌表明... 详细信息

利用分子束外延的方法在GaSb衬底上生长GaSb热光伏电池单元,制作了两种不同的1 cm×1 cm面积尺寸的热光伏电池单元,它们有着不同的电极形状。通过不断优化分子束外延的生长条件,以期得到高质量的GaSb外延层。AFM图中显示的表面形貌表明器件有着高质量的外延层,其表面形貌的RMS只有1.5?(1?=0.1 nm)。测量和比较了两种热光伏电池的器件特性,包括开路电压、短路电流密度、光电转换效率、填充因子以及暗电流密度。在一个模拟太阳光照射下,热光伏电池单元有着0.303 V的开路电压和27.1 mA/cm~2的短路电流密度。和只有简单电极形状的热光伏电池单元进行对比,有栅形电极形状的热光伏电池单元在短路电流密度和填充因子上具有更优异的表现。在红外光的照射下,有栅形电极形状的热光伏电池达到了一个最优的填充因子56.8%。

关键词：锑化镓热光伏电池开路电压短路电流密度填充因子

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综放工作面旋转开采关键技术应用

煤炭与化工 2022年第1期45卷 31-35页

作者：苏相宾中煤集团山西华昱能源有限公司南阳坡煤业山西朔州036000

为了解决南阳坡煤矿26108工作面遇断层导致工作面开采中断的难题,采用理论计算、工程类比等方法优化顺槽布置、设备升级改造,强化在旋转开采过程中“机、巷”等要素的过程控制,同时对工作面运输顺槽转弯处及前后巷道围岩的稳定性控制进... 详细信息

为了解决南阳坡煤矿26108工作面遇断层导致工作面开采中断的难题,采用理论计算、工程类比等方法优化顺槽布置、设备升级改造,强化在旋转开采过程中“机、巷”等要素的过程控制,同时对工作面运输顺槽转弯处及前后巷道围岩的稳定性控制进行了针对性加强,从而成功实施了工作面旋转开采关键技术。该技术避免了南阳坡煤矿工作面搬家倒面带来的安全风险和繁琐工程,保证了矿井生产的连续性和资源回收的最大化,社会效益和经济效益显著。

关键词：设计优化拐点支护设备适应性调整旋转开采

Quantum light source devices of In(Ga)As semiconductor self-assembled quantum dots

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Journal of Semiconductors 2019年第7期40卷 27-37页

作者： Xiaowu He Yifeng Song Ying Yu Ben Ma Zesheng Chen Xiangjun Shang Haiqiao Ni Baoquan sun Xiuming Dou Hao Chen Hongyue Hao Tongtong Qi Shushan Huang Hanqing Liu xiangbin su Xinliang su Yujun Shi Zhichuan Niu State Key Laboratory for superlattices and Microstructures Institute of Semiconductors Chinese Academy of Science Beijing 100083 China School of Engineering University of Glasgow Glasgow G12 8LT UK State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information Technology Sun Yat-sen University Guangzhou 510275 China Laboratory of Solid Quantum Material Center College of Physics and Electronic Engineering Shanxi University Taiyuan 030006 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China Beijing Academy of Quantum Information Sciences Beijing 100193 China

A brief introduction of semiconductor self-assembled quantum dots (QDs) applied in single-photon sources is given. Single QDs in confined quantum optical microcavity systems are reviewed along with their optical properties and coupling characteristics. subsequently, the recent progresses in In(Ga)As QDs systems are summarized including the preparation of quantum light sources, multiple methods for embedding single QDs into different microcavities and the scalability of single-photon emitting wavelength. Particularly, several In(Ga)As QD single-photon devices are surveyed including In(Ga)As QDs coupling with nanowires, InAs QDs coupling with distributed Bragg reflection microcavity and the In(Ga)As QDs coupling with micropillar microcavities. Furthermore, applications in the field of single QDs technology are illustrated, such as the entangled photon emission by spontaneous parametric down conversion, the single-photon quantum storage, the chip preparation of single-photon sources as well as the single-photon resonance-fluorescence measurements.

关键词： quantum optics quantum dots nanowires light sources

Command filter-based I&I adaptive control for MIMO uncertain systems with input saturation and disturbances

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Science China(Information Sciences) 2023年第12期66卷 64-79页

作者： Qi HAN Zhitao LIU Hongye su xiangbin LIU State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and ControlZhejiang University School of Electronic Information Engineering Beijing Jiaotong University

This paper develops a control strategy based on immersion and invariance(I&I) adaptive methodology for a class of multi-input multi-output(MIMO) systems in the presence of parametric uncertainty, input saturation, and external disturbance. To avoid the analytic calculation in the backstepping process, a highgain auxiliary system is constructed to compensate for the effect of command filter error. The first-order command filters are also employed in the construction procedure of the I&I adaptive law to simplify its design and remove the structural conditions on the regressors. A filter-based disturbance observer is developed to counteract the effect of the external disturbance produced by a partially known exogenous *** overcome the input saturation nonlinearity, a smooth function is introduced to approximate the input saturation with an extended state and a bounding estimation law. Stringent analysis guarantees the stability of closed-loop system. Finally, simulated examples confirm the effectiveness of the suggested method.

关键词： adaptive control command filtered backstepping disturbance observer immersion and invariance MIMO systems

Immersion and invariance adaptive control of a class of continuous stirred tank reactors

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Control Theory and Technology 2015年第1期13卷 37-43页

作者： Gaiyan HONG xiangbin LIU Hongye su School of Electronic Information Engineering Beijing Jiaotong University Institute of Cyber-System and Control Zhejiang University

An immersion and invariance （l＆l） manifold based adaptive control algorithm is presented for a class of continuous stirred tank reactors （CSTR） to realize performance-oriented control in this paper. The nonlinear contraction method is combined into the control law design to render the closed-loop CSTR system globally asymptotically stable, firstly. Then, the l＆l method is used to form the adaptation law such that the off-the-manifold coordinate （the parameter estimation error） converges to zero using P-monotone property enforced by selecting tuning function in manifold. As a result, the state of the closed-loop CSTR converges to its desired value asymptotically. The simulation is given to illustrate the effectiveness of the presented algorithm.

关键词： CSTR adaptive control I&l nonlinearly parameterized uncertainty

Robust immersion and invariance adaptive coordinated control for a class of biaxial gantry systems

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Journal of Control and Decision 2022年第3期9卷 289-300页

作者： Kangjun Wang xiangbin Liu Hongye su School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijingPeople’s Republic of China Institute of Cyber-System and Control Zhejiang UniversityHangzhouPeople’s Republic of China

This paper proposes a robust Immersion and Invariance(I&I)adaptive coordinated controller for a class of uncertain linear-motor-driven biaxial gantry system subject to external disturbances for high-accuracy contour ***,the dynamic model of the gantry system is transformed into task coordinate frame,through which the contour tracking can be regarded as a regulation *** on the transformed system dynamics,an I&I-based adaptation law with smooth projection is proposed to estimate the unknown *** from traditional adaptive control,the proposed robust I&I adaptive control introduces a new term called tuning function in adaptation law to shape the dynamic behaviour of the estimation *** the stability of the closed-loop system is proved by Lyapunov ***,comparative experiments are executed on an industrial biaxial gantry system with two different cases to verify the effectiveness of the proposed control law.

关键词： Robust adaptive control immersion and invariance smooth projection coordinated control biaxial gantry contour control