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CLEO: Fundamental Science, CLEO:FS 2024 - Part of Conference on Lasers and Electro-Optics, CLEO 2024

作者： Pang, Zehai Wong, Bengy Tsz Tsun Hu, Jinbing Yang, Yi Department of Physics HK Institute of Quantum Science & Technology The University of Hong Kong Pokfulam Hong Kong College of Optical-Electrical Information and Computer Engineering University of Shanghai for Science and Technology Shanghai200093 China

ISBN: (纸本)9781957171395

We introduce synthetic non-Abelian gauge fields to non-Hermitian systems and study their topological consequences via a non-Abelian Hatano-Nelson model, its photonic realization via a polarization-multiplexed fiber ring resonator, and broken gauge invariance of the non-Abelian Wilson loop. © Optica Publishing Group 2024 © 2024 The Author(s)

关键词： Ring gages

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Spontaneous strong symmetry breaking in open systems: Purification perspective

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Physical Review B 2024年第15期110卷 155150页

作者： Pablo Sala Sarang Gopalakrishnan Masaki Oshikawa Yizhi You Department of Physics and Institute for Quantum Information and Matter Walter Burke Institute for Theoretical Physics Department of Electrical and Computer Engineering Institute for Solid State Physics Department of Physics

We explore the effect of decoherence on many-body mixed states from a purification perspective. Here, quantum channels map to unitary transformations acting on a purified state defined within an extended Hilbert space. First, we exploit this approach to analyze the phenomenon of spontaneous strong-to-weak symmetry breaking (sw-SSB) triggered by strongly symmetric local quantum channels. We find that sw-SSB for mixed states relates to proximity to a symmetry-protected topological (SPT) order in the purified state. Remarkably, the measurement-induced long-range order in the purified SPT state, as characterized by the Rényi-2 correlator, mirrors the ensuing long-range order in the mixed state due to sw-SSB. Moreover, we establish a 1-to-1 correspondence between various sw-SSB order parameters for the mixed state, and strange correlators in the purification, which signify the SPT order. This purification perspective is further extended to explore intrinsic mixed-state topological order and decoherent symmetry-protected topological phases.

关键词： Open quantum systems & decoherence quantum correlations in quantum information Topological phases of matter Symmetries in condensed matter

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Deep Learning Based Multiclass Tumor Identification and Classification Using Fusion of CNN Models 17

Deep Learning Based Multiclass Tumor Identification and Clas...

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17th IEEE International Conference on Signal Processing, ICSP 2024

作者： Saeed, Zubair Torfeh, Tarraf Aouadi, Souha Ji, Jim Xiuquan Bouhali, Othmane Texas A&m University Department of Electrical and Computer Engineering College StationTX47080 United States Texas A&m University at Qatar Department of Electrical and Computer Engineering Doha Qatar Hamad Medical Corporation National Center for Cancer Care and Research Department of Radiation Oncology Doha3050 Qatar Hamad Bin Khalifa University Qatar Center for Quantum Computing College of Science and Engineering Doha34110 Qatar

ISBN: (纸本)9798350387384

The rising incidents of brain tumors pose significant challenges in diagnosis and treatment. Tumorous brain cancers present unique difficulties due to their critical locations and functional implications. Magnetic Resonance Imaging (MRI) offers safe and precise imaging, free from the risks associated with radiation-based methods. Deep learning, particularly Convolutional Neural Networks (CNN), has emerged as a valuable tool in identifying brain tumors in MRI scans, enabling more accurate diagnoses by fusing two well-known DL models. This study explores a fusion strategy combining AlexNet and VGG16 models, outperforming individual models trained with different learning rates. While VGG16 and AlexNet achieved accuracies of 79% and 77% respectively. Our fusion approach potentially achieved an accuracy of 81%, underscoring its efficacy in enhancing brain tumor classification accuracy. This study helps medical professionals to accurately and timely classify tumors for better outcomes for patients. © 2024 IEEE.

关键词： Convolutional neural networks

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Cognitive Radio-Based Spectrum Sensing for Dynamic Spectrum Access in Sensor Ad Hoc Networks 15

Cognitive Radio-Based Spectrum Sensing for Dynamic Spectrum ...

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15th International Conference on computing Communication and Networking Technologies, ICCCNT 2024

作者： Geetha, B. Kansal, Amit Sudhamsu, Gadug Gawali, Piyush P. Amudha, A. Samrat, Bhavuk Prince Shri Venkateshwara Padmavathy Engineering College Department of Science and Humanities Chennai127 India Quantum University Research Center Quantum University Uttar Pradesh India School of Engineering and Technology Computer Science and Engineering Karnataka Bangalore India Vishwakarma Institute of Technology Department of Computer Engineering Pune India Karpagam Academy of Higher Education Department of Electrical and Electronics Engineering Coimbatore641021 India Chitkara University Institute of Engineering and Technology Chitkara University Centre for Interdisciplinary Research for Business and Technology Punjab India

ISBN: (纸本)9798350370249

Cognitive Radio-primarily based Spectrum Sensing (CRSS) is a crucial generation for permitting dynamic spectrum access in sensor ad hoc networks (SAHNs). This era allows customers to successfully make use of to be had spectrum whilst keeping off interference from existing customers. CRSS makes use of sensing and optimization strategies to identify free frequency bands to enable verbal exchange in SAHNs. Moreover, the CRSS additionally consists of protocols and techniques to locate and defend against malicious behavior, which include spectrum jamming and false sensing reports. Subsequently, CRSS may be blended with superior technology, such as multi-agent structures and system gaining knowledge of, to create an efficient and sturdy gadget for dynamic spectrum access. © 2024 IEEE.

关键词： Frequency Generation Malicious Permitting Primarily Spectrum Techniques Technology

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Distributed exact Grover’s algorithm

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Frontiers of physics 2023年第5期18卷 255-279页

作者： Xu Zhou Daowen Qiu Le Luo Institute of Quantum Computing and Computer Theory School of Computer Science and EngineeringSun Yat-sen UniversityGuangzhou 510006China The Guangdong Key Laboratory of Information Security Technology Sun Yat-sen UniversityGuangzhou 510006China School of Physics and Astronomy Sun Yat-sen UniversityZhuhai 519082China QUDOOR Co Ltd.Beijing 100089China

Distributed quantum computation has gained extensive *** this paper,we consider a search problem that includes only one target item in the unordered *** that,we propose a distributed exact Grover’s algorithm(DEGA),which decomposes the original search problem into■n/2■***,(i)our algorithm is as exact as the modified version of Grover’s algorithm by Long,which means the theoretical probability of finding the objective state is 100%;(ii)the actual depth of our circuit is 8(n mod 2)+9,which is less than the circuit depths of the original and modified Grover’s algorithms,1+8■π/4√2^(n)■and 9+8■π/4√2^(n)-1/2■,*** only depends on the parity of n,and it is not deepened as n increases;(iii)we provide particular situations of the DEGA on Mindquantum(a quantum software)to demonstrate the practicality and validity of our *** our circuit is shallower,it will be more resistant to the depolarization channel noise.

关键词： distributed quantum computation search problem distributed exact Grover’s algorithm(DEGA) Mindquantum the depolarization channel noise

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Enhancing the Performance of E-Mode AlGaN/GaN HEMTs With Recessed Gates Through Low-Damage Neutral Beam Etching and Post-Metallization Annealing

IEEE Open Journal of Nanotechnology

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IEEE Open Journal of Nanotechnology 2023年 4卷 150-155页

作者： Chen, Yi-Ho Ohori, Daisuke Aslam, Muhammad Lee, Yao-Jen Li, Yiming Samukawa, Seiji National Yang Ming Chiao Tung University Parallel and Scientific Computing Laboratory Graduate Degree Program of College of Electrical and Computer Engineering Hsinchu300093 Taiwan Tohoku University Institute of Fluid Science Sendai980-8577 Japan National Yang Ming Chiao Tung University Parallel and Scientific Computing Laboratory Electrical Engineering and Computer Science International Graduate Program Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Institute of Pioneer Semiconductor Innovation Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Parallel and Scientific Computing Laboratory Institute of Communications Engineering Institute of Biomedical Engineering Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Department of Electronics and Electrical Engineering Hsinchu300093 Taiwan National Yang Ming Chiao Tung University Institute of Communications Engineering Hsinchu300093 Taiwan

This study investigated the electrical properties of AlGaN/GaN high-electron-mobility transistors (HEMTs) with varied recess depths under the gate electrode. We demonstrated a recess depth of approximately 6 nm, which was achieved through neutral beam etching (NBE) technique with a low etch rate of 1.8 nm/min, resulting in device enhancement-mode (E-mode) behavior with threshold voltage (Vth) of 0.49 V. The effects of post-metallization annealing (PMA) on the device performance were also examined. The results revealed that PMA treatment improves the DC characteristics of the devices, including maximum drain current (IDMAX), transconductance (gm), subthreshold swing (SS), on-off ratio, and off-state leakage current, with maximum enhancement percentage of 18.3% for IDMAX, 3758% for on-off ratio, and 54.3% for SS. Moreover, this study compared the recess depths of metal-insulator-semiconductor high-electron-mobility transistors (MIS-HEMTs) with the SiN dielectric layer. The results showed that MIS-HEMTs exhibit more negative Vth values, which can be attributed to the controlled surface states achieved through passivation. © 2020 IEEE.

关键词： Etching

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Optical Satellite Networks

Optical Satellite Networks

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2023 Optical Fiber Communications Conference and Exhibition, OFC 2023

作者： Chan, Vincent W.S. Massachusetts Institute of Technology Research Laboratory of Electronics Steve Schwarzman College of Computing Ai and Decision System Sector Department of Electrical Engineering and Computer Science United States

We will explore the architecture of optical satellite networks at 100G-1Tbps. The challenge is to architect the system and the network protocols with large bandwidth-delay products and the presence of atmospheric turb... 详细信息

ISBN: (纸本)9781957171180

关键词： Atmospheric turbulence

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Towards new realities: Implications of personalized online layers in our daily lives

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i-com 2024年第2期23卷 221-229页

作者： Herder, Eelco Stojko, Laura Strecker, Jannis Neumayr, Thomas Yigitbas, Enes Augstein, Mirjam Department of Information and Computing Sciences Utrecht University Utrecht Netherlands Department of Computer Science University of the Bundeswehr Munich Neubiberg Germany Institute of Computer Science University of St. Gallen St. Gallen Switzerland Research Group Personalized Environments and Collaborative Systems University of Applied Sciences Upper Austria Hagenberg Austria Faculty of Electrical Engineering Computer Science and Mathematics Paderborn University Paderborn Germany

We are currently in a period of upheaval, as many new technologies are emerging that open up new possibilities to shape our everyday lives. Particularly, within the field of Personalized Human-computer Interaction we observe high potential, but also challenges. In this article, we explore how an increasing amount of online services and tools not only further facilitates our lives, but also shapes our lives and how we perceive our environments. For this purpose, we adopt the metaphor of personalized 'online layers' and show how these layers are and will be interwoven with the lives that we live in the 'human layer' of the real world. © 2024 the author(s), published by De Gruyter, Berlin/Boston.

关键词： Human computer interaction

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Generation of squeezed high-order harmonics

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Physical Review Research 2024年第3期6卷 033079-033079页

作者： Matan Even Tzur Michael Birk Alexey Gorlach Ido Kaminer Michael Krüger Oren Cohen Solid State Institute and Physics Department and Helen Diller Quantum Center Solid State Institute and Department of Electrical and Computer Engineering and Helen Diller Quantum Center Guangdong

For decades, most research of high harmonic generation (HHG) considered matter as quantum but light as classical. Recently, HHG driven by quantum states of light such as bright squeezed vacuum was predicted to reach beyond the classical HHG cutoff. Moreover, in squeezed coherent illumination, it was shown that the underlying dynamics are significantly modified by the photon statistics effective force. Here we show that HHG driven by quantum light results in quantum high harmonics. We derive a formula for the quantum state of the high harmonics, when driven by arbitrary quantum light states, and then explore specific cases of experimental relevance. Specifically, for a moderately squeezed pump, HHG driven by squeezed coherent light results in squeezed high harmonics. Harmonic squeezing is optimized by syncing ionization times with the pump's squeezing phase. Beyond this regime, as pump squeezing is increased, the harmonics initially acquire squeezed thermal photon statistics, and then occupy an intricate quantum state which strongly depends on the semiclassical nonlinear response function of the interacting system. Our results pave the way for generation of squeezed extreme-ultraviolet ultrashort pulses, and more generally, quantum frequency conversion into previously inaccessible spectral ranges, which may enable ultrasensitive attosecond metrology.

关键词： High-order harmonic generation quantum optics quantum states of light

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Comparative Study of Low Bit-width DNN Accelerators: Opportunities and Challenges 66

Comparative Study of Low Bit-width DNN Accelerators: Opportu...

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2023 IEEE 66th International Midwest Symposium on Circuits and Systems, MWSCAS 2023

作者： Vungarala, Deepak Morsali, Mehrdad Tabrizchi, Sepehr Roohi, Arman Angizi, Shaahin New Jersey Institute of Technology Department of Electrical and Computer Engineering NewarkNJ United States School of Computing University of Nebraska-Lincoln LincolnNE United States

ISBN: (纸本)9798350302103

Digital Processing-in-Memory (PIM) architectures have recently unleashed significant potential in Deep Neural Network (DNN) acceleration not only by addressing memory-wall bottlenecks but also by offering impressive performance improvement compared to the von-Neumann architecture. Different flavors of DNN ASIC accelerators have also been developed and fabricated, with remarkable performance and efficiency. This paper conducts a comparative study of PIM and Gemmini-generated accelerators for low-bit-width DNN inference and underscores their key architectural constraints, opportunities, and security challenges. To this end, we compare multiple low-power accelerators with our recently taped-out PIM macro to provide a guideline for the community. © 2023 IEEE.

关键词： accelerator ASIC processing-in-memory

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