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Next-generation machine vision systems incorporating two-dimensional materials: Progress and perspectives

InfoMat 2022年第1期4卷 23-39页

作者： Peisong Wu Ting He He Zhu Yang Wang Qing Li Zhen Wang Xiao Fu Fang Wang Peng Wang Chongxin Shan Zhiyong Fan Lei Liao Peng Zhou Weida Hu State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghaiChina University of Chinese Academy of Sciences BeijingChina Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhouChina State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghaiChina Henan Key Laboratory of Diamond Optoelectronic Materials and Devices School of Physics and EngineeringZhengzhou UniversityZhengzhouChina Department of Electronic and Computer Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina School of Physics and Electronics Hunan UniversityChangshaChina

Machine vision systems(MVSs)are an important component of intelligent systems,such as autonomous vehicles and ***,with the continuous increase in data and new application scenarios,new requirements are put forward for the next generation of *** is an urgent need to find new material systems to complement the existing semiconductor technology based on thin-film materials,and new architectures must be explored to improve *** of their unique physical properties,two-dimensional(2D)materials have received extensive attention for use in MVSs,especially in biomimetic ones:the human visual system,which can process complex visual information with low power consumption,provides a model for next-generation *** review paper summarizes the progress and challenges of applying 2D material photodetectors in sense-memory-computational integration and biomimetic image sensors for machine vision.

关键词： in-sensor computing machine vision systems photodetectors two-dimensional materials

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Recent Advances in Space-Deployable Structures in China

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engineering 2022年第10期17卷 207-219页

作者： Xiaofei Ma Tuanjie Li Jingya Ma Zhiyi Wang Chuang Shi Shikun Zheng Qifeng Cui Xiao Li Fan Liu Hongwei Guo Liwu Liu Zuowei Wang Yang Li Xi’an Institute of Space Radio Technology Xi’an 710100China School of Electromechanical Engineering Xidian UniversityXi’an 710071China Beijing Institute of Spacecraft System Engineering Beijing 100094China Aerospace System Engineering Shanghai Shanghai 201109China State Key Laboratory of Robotics Harbin Institute of TechnologyHarbin 150001China Department of Astronautical Science and Mechanics Harbin Institute of TechnologyHarbin 150001China

Deployable space structure technology is an approach used in building spacecraft,especially when realizing deployment and folding *** in orbit,the structures are released from the fairing,deployed,and *** the development of communication,remote-sensing,and navigation satellites,space-deployable structures have become cutting-edge research topics in space science and *** paper summarizes the current research status and development trend of spacedeployable structures in China,including large space mesh antennas,space solar arrays,and deployable structures and mechanisms for deep-space *** technologies of space-deployable structures are addressed from the perspectives of deployable mechanisms,cable-membrane form-finding,dynamic analysis,reliable environmental adaptability analysis,and ***,future technology developments and trends are elucidated in the fields of mesh antennas,solar arrays,deployable mechanisms,and on-orbit adjustment,assembly,and construction.

关键词： Deployable space structures Mesh antennas Solar arrays Deep-space exploration

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Quantum Photonics Enhances Continuous Variable Quantum key Distribution

Quantum Photonics Enhances Continuous Variable Quantum Key D...

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2023 Photonics and Electromagnetics Research Symposium, PIERS 2023

作者： Li, Lang Wang, Tao Huang, Peng Zeng, Guihua Institute of Quantum Sensing and Information Processing School of Sensing Science and Engineering Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering 200240 China Shanghai Research Center for Quantum Sciences Hefei National Laboratory Shanghai201315 China

ISBN: (纸本)9798350312843

Continuous-variable quantum key distribution (CV-QKD) technology has the characteristics of high channel capacity and well compatibility with existing optical communication infrastructures, and has become an important implementation method of quantum secure communication. Quantum photonics technology provides a promising solution for the construction of low-cost, miniaturized, portable, scalable and highly stable CV-QKD systems that can be deployed at large scale [1]. Therefore, it is of great significance to research and build a chip-based CV-QKD system with higher integration, higher system performance and higher practical security for the development of high-performance and practical quantum secure communication technology. This paper mainly reports the latest progress of the research of on-chip CV-QKD system in terms of system practical security [2] and integration of high-performance light sources [3]. © 2023 IEEE.

关键词： Quantum cryptography

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PAM-4 optical transmission beyond 224 Gbps based on an ultrahigh-bandwidth slow-light silicon modulator

PAM-4 optical transmission beyond 224 Gbps based on an ultra...

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CLEO: Applications and Technology in CLEO 2024, CLEO: A and T 2024 - Part of Conference on Lasers and Electro-Optics

作者： Han, Changhao Qin, Jun Yang, Qipeng Zheng, Zhao Shu, Haowen Zhang, Yunhao Wu, Yichen Sun, Yu Lu, Junde Zhou, Yan Ge, Zhangfeng Wang, Lei He, Zhixue Yu, Shaohua Hu, Weiwei Peng, Chao Bowers, John E. Wang, Xingjun State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Peking University Beijing100871 China Department of Electrical and Computer Engineering University of California Santa BarbaraCA93106 United States Key Laboratory of Information and Communication Systems Ministry of Information Industry Beijing Information Science and Technology University Beijing100192 China Frontiers Science Center for Nano-optoelectronics Peking University Beijing100871 China Peng Cheng Laboratory Shenzhen518055 China Peking University Yangtze Delta Institute of Optoelectronics Nantong226010 China

We experimentally demonstrate PAM-4 optical transmission beyond 224 Gbps based on an ultrahigh-bandwidth slow-light silicon modulator in C-band with the combination of the artificial neural network equalizers. © ... 详细信息

关键词： Light modulators

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Protected Fair Secret Sharing Based Bivariate Asymmetric Polynomials in Satellite Network

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Computers, Materials & Continua 2022年第9期72卷 4789-4802页

作者： Yanyan Han Jiangping Yu Guangyu Hu Chenglei Pan Dingbang Xie Chao Guo Abdul Waheed Department of Electronics and Communication Engineering Beijing Electronics Science and Technology InstituteBeijing100070China State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an710126China Department of Cryptography and Technology Beijing Electronics Science and Technology InstituteBeijing100070China Department of Cyberspace Security Beijing Electronic Science and Technology InstituteBeijing100070China School of Communication Engineering Xidian UniversityXi’an710126China Institute of Information Engineering Chinese Academy of SciencesBeijing100093China University of Management Technology Lahore-Pakistan55300Pakistan

Verifiable secret sharing mainly solves the cheating behavior between malicious participants and the ground control center in the satellite *** verification stage can verify the effectiveness of secret shares issued by the ground control center to each participant and verify the effectiveness of secret shares shown by *** use a lot of difficult assumptions based on mathematical problems in the verification stage,such as solving the difficult problem of the discrete logarithm,large integer prime factorization,and so *** with other verifiable secret sharing schemes designed for difficult problems under the same security,the verifiable secret sharing scheme based on the Elliptic Curve Cryptography(ECC)system has the advantages of less computational overhead and shorter *** present,the binary polynomial is a single secret scheme and cannot provide effective ***,based on a Protected Verifiable Synchronous Multi Secret Sharing(PVS-MSS)scheme,this paper is designed based on bivariate asymmetric *** advanced verifiable attribute is introduced into the Protected Secret Sharing(PSS)*** paper extends the protected synchronous multi-secret sharing scheme based on bivariate polynomial *** ECC system constructs the security channel between the ground control center and participants and constructs the verification *** the verification algorithm,any participant can verify the consistency and effectiveness of the secret shadow and secret share received from other participants or presented by the secret distribution ***,no additional key agreement protocol is required;participants do not need to negotiate the session key for encryption;the secret share polynomial can generate the session key between participants and speed up the secret reconstruction *** verification stage has lower computational complexity than the verifiable scheme constructed by Rivest Shamir Adleman (RS

关键词： Multi-secret sharing binary asymmetric verifiable synchronization protected satellite network

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PAM-4 optical transmission beyond 224 Gbps based on an ultrahigh-bandwidth slow-light silicon modulator

PAM-4 optical transmission beyond 224 Gbps based on an ultra...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Han, Changhao Qin, Jun Yang, Qipeng Zheng, Zhao Shu, Haowen Zhang, Yunhao Wu, Yichen Sun, Yu Lu, Junde Zhou, Yan Ge, Zhangfeng Wang, Lei He, Zhixue Yu, Shaohua Hu, Weiwei Peng, Chao Bowers, John E. Wang, Xingjun State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Peking University Beijing100871 China Department of Electrical and Computer Engineering University of California Santa BarbaraCA93106 United States Key Laboratory of Information and Communication Systems Ministry of Information Industry Beijing Information Science and Technology University Beijing100192 China Frontiers Science Center for Nano-Optoelectronics Peking University Beijing100871 China Peng Cheng Laboratory Shenzhen518055 China Peking University Yangtze Delta Institute of Optoelectronics Nantong226010 China

ISBN: (纸本)9781957171395

关键词： Silicon photonics

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P-10.2: Design and Simulation of Integrated Ultraviolet HEMT-LED enabled by P-GaN Selective Epitaxy Growth

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SID Symposium Digest of Technical Papers 2023年第S1期54卷 789-791页

作者： Jingyang Zhang Wei Huang Zhaojun Liu Department of electronic and electrical engineering Southern University of Science and Technology Shenzhen Guangdong China 518055 A State Key Laboratory of ASIC and System Shanghai Institute of Intelligent Electronics & Systems School of Microelectronics Fudan University Shanghai China 200433

Based on previous work, the ultraviolet HEMT-LED we fabricated by selective epitaxy growth, this paper further performed simulation to explore the most appropriate p-GaN selection size. P-GaN grown by Selective Epitaxy Growth (SEG) can not only be employed as a junction termination to reduce the electric field crowding of the gate of HEMT, but also form an active region by contacting with 2-dimentional electron gas (2DEG). The simulation results provide an effective reference for the design of p-GaN grown by SEG, and further pave the way for the realization of the idea of integration through the selection of growth methods.

关键词：

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Tunable High Precision Signal Processing Based on the Simultaneous Photonic Filtering and Digitizing system

Tunable High Precision Signal Processing Based on the Simult...

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2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023

作者： Sun, Yiwei Tan, Qinggui Wang, Di Liang, Dong Wang, Sitong Gong, Jingwen Wu, Guiling Xi'an710010 China The State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China Shanghai Huawei Technologies Company Ltd. Shanghai201206 China

ISBN: (纸本)9798350345995

With the development of the communication and radar systems, the demand for precisely processing broadband signal has become urgent. The basic functions of filtering and digitizing are often needed together in many applications such as antialiasing and interference suppression in digital receivers. To break the bottleneck of the traditional methods, a recently-proposed simultaneous photonic filtering and digitizing system[1] can achieve analog pre-filtering and digitizing at the same time, and its equivalent system response can be tuned by shaping the optical sampling pulses. However, limited by the dilemma between the precision and duration of the shaped pulses, the bandwidth of the signal processing are constraint. The design rules to achieve precise signal procession are analysed. An optical shaping scheme based on the interference and frequency-to-time mapping is utilized in the system[2], as shown in Fig. 1(a). The response of the OF is G(ω), and the tunable delay difference between interference arms is τ. The dispersive value of the SMF is Φv. The RF signals are processed and digitized in the IMDD link and EADC[2]. The equivalent system response HA(ω) for signal processing is HA(ω) ∝ (∑∞n=0 F (G (Φtυ )) |ω=n2π Ts. HE(ω) ∗ δ (ω − n 2πTs).) ∗ [δ(ω) + 2I0. δ (ω − Φτυ )], (1) where HE(ω) is the frequency response of the devices from PD to ADC. Ts is the period of the MLL. The equivalent system response is non-periodic and composed by two identical receiving passbands located at DC and ω = τ/Φv. The passband is the superposition of HE(ω), with the coefficients determined by the Fourier transform of G(t/Φv). If the bandwidth of F(G(t/Φv)) is narrower than ωs = 2π/Ts, then the passband is determined by HE(ω) since there is only one delta function left in the brace bracket. Thus, the precision of the signal processing can be improved to HE(ω), which usually not exceeds hundreds of MHz. ωs should be ωs ≥ Φ2πKυ.B, (2) to increase the procession precision. K and B are th

关键词： Bandwidth

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1λ 1.6-Tb/s Direct Detection via a Hybrid Optical Hilbert Receiver and Stokes Vector Receiver

1λ 1.6-Tb/s Direct Detection via a Hybrid Optical Hilbert R...

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IEEE Photonics Conference (IPC)

作者： Yixiao Zhu Xiansong Fang Lingjun Zhou Junbo Zhu Yunchen Li Xian Zhou Kangping Zhong Alan Pak Tao Lau Zhixue He Lei Wang Weisheng Hu Ke Li Fan Zhang State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University China State Key Laboratory of Advanced Optical Communication System and Networks Peking University Beijing China Pengcheng Laboratory Shenzhen China University of Science and Technology Beijing Beijing China Department of Electrical and Electronic Engineering Photonics Research Institute The Hong Kong Polytechnic University Hong Kong China

We propose a hybrid optical Hilbert receiver and Stokes vector receiver (OH-SVR) capable of phase and polarization diversity. We experimentally demonstrate single-wavelength direct detection at 1.6-Tb/s and 1.56-Tb/s ... 详细信息

ISBN: (数字)9798350361957

ISBN: (纸本)9798350361964

关键词： Optical fiber polarization Optical polarization Optical interconnections Lasers Wavelength division multiplexing Vectors Optical receivers Standards Next generation networking Photonics

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Optical coherent dot-product chip for sophisticated deep learning regression

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Light(science & Applications) 2021年第12期10卷 2330-2341页

作者： Shaofu Xu Jing Wang Haowen Shu Zhike Zhang Sicheng Yi Bowen Bai Xingjun Wang Jianguo Liu Weiwen Zou State Key Laboratory of Advanced Optical Communication Systems and Networks Intelligent Microwave Lightwave Integration Innovation Center(imLic)Department of Electronic EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China State Key Laboratory of Advanced Optical Communications System and Networks Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China Institution of Semiconductors Chinese Academy of SciencesBeijing 100083China

Optical implementations of neural networks(ONNs)herald the next-generation high-speed and energy-efficient deep learning computing by harnessing the technical advantages of large bandwidth and high parallelism of ***,due to the problems of the incomplete numerical domain,limited hardware scale,or inadequate numerical accuracy,the majority of existing ONNs were studied for basic classification *** that regression is a fundamental form of deep learning and accounts for a large part of current artificial intelligence applications,it is necessary to master deep learning regression for further development and deployment of ***,we demonstrate a silicon-based optical coherent dot-product chip(OCDC)capable of completing deep learning regression *** OCDC adopts optical fields to carry out operations in the complete real-value domain instead of in only the positive *** reusing,a single chip conducts matrix multiplications and convolutions in neural networks of any ***,hardware deviations are compensated via in-situ backpropagation control provided the simplicity of chip ***,the OCDC meets the requirements for sophisticated regression tasks and we successfully demonstrate a representative neural network,the AUTOMAP(a cutting-edge neural network model for image reconstruction).The quality of reconstructed images by the OCDC and a 32-bit digital computer is *** the best of our knowledge,there is no precedent of performing such state-of-the-art regression tasks on ONN *** is anticipated that the OCDC can promote the novel accomplishment of ONNs in modern AI applications including autonomous driving,natural language processing,and scientific study.

关键词： neural hardware coherent

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