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International Electron Devices Meeting (IEDM)

作者： Tiancheng Zhao Xinxin Yu Wenhui Xu Yang He Zhenyu Qu Rui Shen Ruize Wang Huaixin Guo Huarui Sun Zhonghui Li Min Zhou Tiangui You Xin Ou State Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China CETC Key Laboratory of Carbon-based Electronics Nanjing Electronic Devices Institute Nanjing China School of Science and Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System Harbin Institute of Technology Shenzhen China National Key Laboratory of Solid-State Microwave Devices and Circuits Nanjing China

ISBN: (数字)9798350365429

ISBN: (纸本)9798350365436

We, for the first time, fabricated wafer-level arrayed β-Ga 2 O 3 single crystal thin films on diamond substrate using transfer printing technology. The transfer-printed β-Ga 2 O 3 thin film possesses a thickness of 260 nm, a XRD rocking curve FWHM of ∼78 arcsec, and a surface roughness of 0.36 nm. The amorphous interface layer after post-annealing is less than 2 nm. The thermal boundary resistance is extracted to 21.7 m 2 .K/GW, which is the lowest value reported for single-crystal β-Ga 2 O 3 integrated with diamond. Thanks to the high thermal conductivity of diamond and the high-quality hetero-interface, the performance of β-Ga 2 O 3 -on-diamond RF MOSFETs is significantly enhanced. The maximum on-state current is 810 mA/mm, and the $f_{\max}$ before de-embedding reaches 61 GHz, which is the highest recorded value to date. Infrared thermal imaging shows that integrating with diamond significantly reduces the junction temperature of β-Ga 2 O 3 devices. The $\mathrm{R}_{\text{th}}$ of β-Ga 2 O 3 -on-diamond devices is merely 5.52 K·mm/W, setting a new record for β-Ga 2 O 3 -based devices. These results demonstrate that hetero-integration with diamond via wafer-level transfer printing technology provides an effective thermal management platform for β-Ga 2 O 3 , facilitating its advancement in high-power and RF devices.

关键词： Radio frequency Printing Temperature measurement MOSFET X-ray scattering Voltage measurement Thermal resistance Logic gates Diamond Substrates

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Enhanced THz Emission and Chirality Control in van der Waals Ferromagnetic FePd2Te2/Pt Heterostructures

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Journal of the American Chemical Society 2025年第23期147卷 2025 May 27页

作者： Jiali Zhang Bingxian Shi Haoran Xu Yiwen Song Yuqing Zou Ziyang Li Hongtao Dai Yuna Song Qingyuan Jin Peng Cheng Zuanming Jin Zongzhi Zhang Key Laboratory of Micro and Nano Photonic Structures (MOE) School of Information Science and Technology Fudan University Shanghai 200433 China. Department of Physics Key Laboratory of Quantum State Construction and Manipulation Ministry of Education Renmin University of China Beijing 100872 China. Laboratory for Neutron Scattering Department of Physics Renmin University of China Beijing 100872 China. Terahertz Technology Innovation Research Institute Terahertz Spectrum and Imaging Technology Cooperative Innovation Center Shanghai Key Lab of Modern Optical System University of Shanghai for Science and Technology Shanghai 200093 China. State Key Laboratory of Precision Spectroscopy East China Normal University Shanghai 200062 P. R. China.

Two-dimensional (2D) magnetic materials, with their unique van der Waals (vdW) layered structure, tunable magnetism, and strong spin-orbit coupling, are promising for spintronic applications like terahertz (THz) emitters. Our study investigates the THz radiation properties of the newly discovered vdW ferromagnet FePdTe, which features a one-dimensional Fe zigzag chain structure and strong in-plane uniaxial anisotropy. Using ultrafast reflective THz emission spectroscopy (TES), we demonstrate that the paramagnetic FePdTe produces weak THz emission at room temperature. However, when capped with a 3 nm Pt layer, the THz emission intensity is significantly enhanced, attributed to spin-to-charge conversion (SCC) via the inverse spin Hall effect (ISHE). In the FePdTe/Pt heterostructure, the THz emission intensity is closely linked to the spin texture induced by crystal twinning in FePdTe and depends on the polarization angle of the pump laser. Two mechanisms for the photoexcited spin current generation are identified: one from spin-polarized hot electrons at the FePdTe/Pt interface, and the other, which is dominant, from angular momentum transfer through a nonlinear optical effect that induces impulsive magnetization. These findings provide valuable insights into the spin dynamics of 2D materials and open avenues for high-density, low-power THz spintronic device development based on advanced 2D vdW magnets.

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Quasi bound states in the continuum empowered intrinsically chiral emission

Quasi bound states in the continuum empowered intrinsically ...

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Frontiers in Optics, FiO 2022

作者： Zhang, Xudong Liu, Yilin Han, Jiecai Kivshar, Yuri Song, Qinghai Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Harbin Institute of Technology Shenzhen518055 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin150080 China Nonlinear Physics Center Research School of Physics Australian National University CanberraACT2601 Australia Pengcheng Laboratory Shenzhen518055 China Collaborative Innovation Center of Extreme Optics Shanxi University Shanxi Taiyuan030006 China

By utilizing the physics of chiral quasi-bound states in the continuum (BICs) which breaking out-of-plane symmetry by slant meta-atoms, an ultracompact source with controllable spectrum, radiation pattern and spin ang...

ISBN: (纸本)9781557528209

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Controllable distant interactions at bound state in the continuum

arXiv

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arXiv 2024年

作者： Tang, Haijun Huang, Can Wang, Yuhan Jiang, Xiong Xiao, Shumin Han, Jiecai Song, Qinghai Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems Harbin Institute of Technology Shenzhen518055 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin150080 China Pengcheng Laboratory Shenzhen518055 China Collaborative Innovation Center of Extreme Optics Shanxi University Shanxi Taiyuan030006 China

Distant interactions at arbitrary locations and their dynamic control are fundamentally important for realizing large-scale photonic and quantum circuits. Conventional approaches suffer from short coupling distance, poor controllability, fixed locations and low wavelength uniformity, significantly restricting the scalability of photonic and quantum networks. Here, we exploit the intrinsic advantages of optical bound state in the continuum (BIC) and demonstrate an all-in-one solution for dynamically controllable long-range interactions. BIC metasurface can support a series of finite-sized quasi-BIC microlasers at arbitrary locations. The quasi-BICs microlasers have the same wavelength and are inherently connected through BIC waveguide. Consequently, the coupling distances in experiment increase significantly from subwavelength to tens of micrometers. Such long-range interaction in BIC metasurface enables scaling to two-dimensional architectures and ultrafast control of internal laser actions, e.g., non-Hermitian zero-mode lasing and enhanced optical gain. This research shall facilitate the advancement of scalable and reconfigurable photonic networks. © 2024, CC BY.

关键词： Location

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Gaussian Boson Sampling with Pseudo-Photon-Number-Resolving Detectors and Quantum Computational Advantage

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Physical Review Letters 2023年第15期131卷 150601-150601页

作者： Yu-Hao Deng Yi-Chao Gu Hua-Liang Liu Si-Qiu Gong Hao Su Zhi-Jiong Zhang Hao-Yang Tang Meng-Hao Jia Jia-Min Xu Ming-Cheng Chen Jian Qin Li-Chao Peng Jiarong Yan Yi Hu Jia Huang Hao Li Yuxuan Li Yaojian Chen Xiao Jiang Lin Gan Guangwen Yang Lixing You Li Li Han-Sen Zhong Hui Wang Nai-Le Liu Jelmer J. Renema Chao-Yang Lu Jian-Wei Pan Hefei National Laboratory for Physical Sciences at Microscale and School of Physical Sciences University of Science and Technology of China Hefei Anhui 230026 China CAS Centre for Excellence and Synergetic Innovation Centre in Quantum Information and Quantum Physics University of Science and Technology of China Shanghai 201315 China Hefei National Laboratory University of Science and Technology of China Hefei 230088 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Micro system and Information Technology (SIMIT) Chinese Academy of Sciences 865 Changning Road Shanghai 200050 China Department of Computer Science and Technology and Beijing National Research Center for Information Science and Technology Tsinghua University Beijing 100084 China Adaptive Quantum Optics Group Mesa+ Institute for Nanotechnology University of Twente P.O. Box 217 7500 AE Enschede Netherlands New Cornerstone Science Laboratory Shenzhen 518054 China

We report new Gaussian boson sampling experiments with pseudo-photon-number-resolving detection, which register up to 255 photon-click events. We consider partial photon distinguishability and develop a more complete model for the characterization of the noisy Gaussian boson sampling. In the quantum computational advantage regime, we use Bayesian tests and correlation function analysis to validate the samples against all current classical spoofing mockups. Estimating with the best classical algorithms to date, generating a single ideal sample from the same distribution on the supercomputer Frontier would take ∼600 yr using exact methods, whereas our quantum computer, Jiǔzhāng 3.0, takes only 1.27 μs to produce a sample. Generating the hardest sample from the experiment using an exact algorithm would take Frontier∼3.1×1010 yr.

关键词： Boson sampling Quantum computation Quantum information with atoms & light Quantum states of light Photon counting

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A Novel 1T-APS Using 22 nm FD-SOI technology with Record High Tunable Sensitivity Range

IEEE Electron Device Letters

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IEEE Electron Device Letters 2025年

作者： Xie, Hui Wang, Zehua He, Rongshan Wang, Haihua Cao, Jingya Zhou, Peng Tang, Xiao-Lan Jiang, Yu-Long Xu, Yong Wan, Jing Fudan University College of Integrated Circuits and Micro-Nano Electronics Shanghai200433 China Nanjing University of Posts and Telecommunications College of Integrated Circuit Science and Engineering Nanjing210023 China Shaoxin Laboratory Shaoxing312000 China Gannan University of Science and Technology School of Information Engineering Ganzhou341000 China Guangdong Greater Bay Area Institute of Integrated Circuit and System Guangzhou510300 China

A novel one transistor active pixel sensor (1T-APS) with extraordinary tunable sensitivity range is experimentally demonstrated using 22 nm fully depleted silicon-on-insulator (FD-SOI) technology. The proposed device enables independent control of both full well capacity and sensitivity. Two electrodes are connected to the substrate, with one used to form the depletion region beneath the buried oxide (BOX) and the other to tune the movement of photoelectrons. The experimental results show a record high tunable sensitivity range of 340000%, varying from 4 mV/(μJ/cm2) to 13.6 V/(μJ/cm2). With tunable sensitivity, the dynamic range is expanded from 51.5 dB to 101.5 dB, making it promising for high-dynamic-range imaging applications. © 1980-2012 IEEE.

关键词： Pixels

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An Accurate and Time-Efficient Subtractor by Cross Format Coding in Stochastic Computing

An Accurate and Time-Efficient Subtractor by Cross Format Co...

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IEEE Asia-Pacific Conference on Circuits and systems

作者： Zhihuai Zhang Weiqian Zhang Shisheng Xiong Yudi Zhao Micro-nano System Center School of Information Science and Technology Fudan University Shanghai China Key Laboratory of Information and Communication Systems Ministry of Information Industry Beijing Information Science and Technology University Beijing China

Different from binary computation, stochastic computation (SC), as a new paradigm, uses stochastic bit stream (SBS) to encode data. By simplifying computing elements, the circuit area can be greatly reduced. SBS can be generated by a stochastic number generator (SNG) with a variety of formats. In this work, we use unipolar (UP) and bipolar (BP) formats to optimize the traditional SC subtractor, which is named the UP-to-BP Subtractor (UBS). A new cross format coding (CFC) method is proposed for stochastic computing, which combines the UP and BP format, and is applied to Sobel edge detection in image processing algorithms. The fault tolerance and detection efficacy of the proposed CFC method and conventional binary computing are compared in this paper. By using the CFC method, the detected F-Score is improved by 0.15(23%). If the F-score remains unchanged, the processing speed can be about 10 times faster.

关键词： Fault tolerance Image coding Circuits and systems Image edge detection Fault tolerant systems Asia Generators

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Dynamic Aging Weight Scheme for Trust Model in Internet of Medical Things

Dynamic Aging Weight Scheme for Trust Model in Internet of M...

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2021 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2021

作者： Fang, Weidong Zhu, Chunsheng Ma, Tian Min Zhang, Wuxiong Li, Baoqing Yi, Li Xu, Fangchen Zhang, Tianchen Wang, Bo Shanghai Institute of Micro-system and Information Technology Chinese Academy of Sciences Science and Technology on Micro-System Laboratory Shanghai201899 China University of Chinese Academy of Sciences Beijing100049 China Shanghai Research and Development Center for Micro-Nano Electronics Shanghai201210 China Southern University of Science and Technology Shenzhen518055 China Peng Cheng Laboratory Shenzhen518055 China Asian International Collaboration Waitemata District Health Board Auckland0740 New Zealand China Oil and Gas Pipeline Network Corporation West East Gas Pipeline Company Shanghai2001200 China Fuzhou350015 China

ISBN: (纸本)9781665401265

It has been observed that the Internet of Medical Things (IoMT) is being deployed to construct varieties of intelligent platforms in medical and healthcare field, in order to comprehensively improve the quality of medical services. However, the cyber security of IoMT is facing enormous threat. Although many trust schemes are proposed to address the issue, the ignorance of aging weight in trust increases the risk of long-term attacks before being detected. In this paper, we design a dynamic aging weight scheme for trust model in IoMT. Essentially, when there are cooperative behaviors between two nodes, the aging weight can be set as large as possible to slow down the increase in the trust value of normal nodes. Once noncooperative behaviors appear, the smaller aging weight could mitigate the danger of compromised nodes. The simulation results indicate that our proposed scheme could better meet the principle of 'Easy to lose' for trust. © 2021 IEEE.

关键词： Cybersecurity

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High spatial resolution collinear chiral sum-frequency generation microscopy

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Advanced Photonics Nexus 2024年第2期3卷 42-48页

作者： Ziheng Ji Wentao Yu Dashan Dong Hong Yang Kaihui Liu Yun-Feng Xiao Qihuang Gong Qinghai Song Kebin Shi Harbin Institute of Technology(Shenzhen) School of ScienceMinistry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information SystemShenzhenChina Peking University School of PhysicsState Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-OptoelectronicsBeijingChina Nanjing University of Science and Technology Institute of Interdisciplinary Physical SciencesSchool of ScienceNanjingChina Shanxi University Collaborative Innovation Center of Extreme OpticsTaiyuanChina Peking University Yangtze Delta Institute of Optoelectronics NantongChina

Chiral sum-frequency generation(SFG)has proven to be a versatile spectroscopic and imaging tool for probing ***,due to polarization restriction,the conventional chiral SFG microscopes have mostly adopted noncollinear beam configurations,which only partially cover the aperture of microscope and strongly spoil the spatial *** this study,we report the first experimental demonstration of collinear chiral SFG microscopy,which fundamentally supports diffraction-limited *** advancement is attributed to the collinear focus of a radially polarized vectorial beam and a linearly polarized(LP)*** tightly focused vectorial beam has a very strong longitudinal component,which interacts with the LP beam and produces the chiral *** collinear configuration can utilize the full aperture and thus push the spatial resolution close to the diffraction *** technique can potentially boost the understanding of chiral systems.

关键词： chiral sum-frequency generation radially polarized beam nonlinear optical microscopy

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Direct observation of chaotic resonances in optical microcavities

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Light(science & Applications) 2021年第8期10卷 1455-1461页

作者： Shuai Wang Shuai Liu Yilin Liu Shumin Xiao Zi Wang Yubin Fan Jiecai Han Li Ge Qinghai Song Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Harbin Institute of Technology(Shenzhen)Shenzhen 518055China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080China. Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China. Department of Physics and Astronomy College of Staten IslandCUNYStaten IslandNY 10314USA. The Graduate Center CUNYNew YorkNY 10016USA

Optical microcavities play a significant role in the study of classical and quantum *** date,most experimental explorations of their internal wave dynamics have focused on the properties of their inputs and outputs,without directly interrogating the dynamics and the associated mode patterns *** a result,this key information is rarely retrieved with certainty,which significantly restricts the verification and understanding of the actual chaotic *** we demonstrate a simple and robust approach to directly and rapidly map the internal mode patterns in chaotic *** introducing a local index perturbation through a pump laser,we report a spectral response of optical microcavities that is proportional to the internal field *** this technique,chaotic modes with staggered mode spacings can be ***,a complete chaos assisted tunneling(CAT)and its time-reversed process are experimentally verified in the optical domain with unprecedented certainty.

关键词： motion chaotic reversed

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