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Carrier synchronization for continuous-variable measurement-device-independent quantum key distribution with a real local oscillator

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Physical Review A 2021年第2期104卷 022606-022606页

作者： Tao Wang Peng Huang Hongxin Ma Shiyu Wang Guihua Zeng State Key Laboratory of Advanced Optical Communication Systems and Networks Center of Quantum Sensing and Information Processing Shanghai Jiao Tong University Shanghai 200240 China Zhengzhou Information Science and Technology Institute Zhengzhou 450004 China College of Information Science and Technology Northwest University Xi'an 710127 Shaanxi China

We propose a carrier synchronization scheme for continuous-variable measurement-device-independent quantum key distribution (CV-MDI-QKD) with a real local oscillator (LO). The middle node Charlie evaluates carrier frequency offsets and phase drift values based on the pilot signal sent by the legal parties Alice and Bob and a part of their public data. Alice and Bob then calibrate their modulation data according to the evaluation parameters to achieve carrier synchronization. We simulate the entire CV-MDI-QKD protocol and verify the feasibility of this scheme. The influences of pilot segment size and public data size on the excess noise are also analyzed. Besides, we experiment to measure the actual frequency offsets and phase drifts in the channel, which gives guidance on the actual implementation. This solution can ensure the implementation of CV-MDI-QKD with a real LO, paving the way for the practical application of this high-rate QKD protocol.

关键词： Quantum communication Quantum cryptography Quantum information processing with continuous variables

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Research of coal temperature early warning method based on curve fitting

Research of coal temperature early warning method based on c...

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2nd International Conference on Communications, Signal processing, and systems, CSPS 2013

作者： Leng, Yujun Huang, Jun Wu, Qiang Zhu, Jianglong Xiao, Shilin Chongqing Key Laboratory of Signal and Information Processing Chongqing University of Posts and Telecommunications Chongqing 400065 China Chongqing MAS Science and Technology Co. LTD Chongqing 400065 China State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai 200240 China

ISBN: (纸本)9783319005355

The main purpose of this paper is to introduce a kind of coal temperature early warning method based on Curve fitting. The method is to analysis the real-time sampled data, obtain the fitting sequence, plot the fitted curve, and Calculating time difference, then judge warning level and take appropriate measures. This early warning method can timely reaction temperature parameters in mine anomalies, and take reasonable precautions, automatically, effectively reduce the incidence of coal mine safety accidents. © 2014 Springer International Publishing Switzerland.

关键词： Curve fitting

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The design of RFID middleware data filtering based on coal mine safety

The design of RFID middleware data filtering based on coal m...

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2nd International Conference on Communications, Signal processing, and systems, CSPS 2013

作者： Zhu, Jianglong Huang, Jun He, Dawen Leng, Yujun Xiao, Shilin Chongqing Key Laboratory of Signal and Information Processing Chongqing University of Posts and Telecommunications Chongqing 400065 China Chongqing MAS Science and Technology Co. Ltd Chongqing 400065 China State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai 200240 China

ISBN: (纸本)9783319005355

This paper introduces the application of radio frequency identification (RFID) technology in coal mine safety. As one of the most important part of the radio frequency identification (RFID) system, RFID middleware is introduced. To resolve the problem of processing great number of RFID datum, the data filter method becomes a very hot filed for researching. Several filter methods are researched and analysed in the paper. The readers collect the data from the tags. The algorithm is to filter the data which is within the scope of setting. The algorithm achieves the effect of filter redundant data. © 2014 Springer International Publishing Switzerland.

关键词： Middleware

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The design of the RF front-end of reader based on SAW RFID

The design of the RF front-end of reader based on SAW RFID

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2nd International Conference on Communications, Signal processing, and systems, CSPS 2013

作者： Wu, Fuhai Huang, Jun Ma, Cheng Leng, Yujun Yang, Jing Xiao, Shilin Chongqing Key Laboratory of Signal and Information Processing Chongqing University of Posts and Telecommunications Chongqing 400065 China Chongqing MAS Science and Technology Co. LTD Chongqing 400065 China State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai 200240 China

ISBN: (纸本)9783319005355

This paper first describes the system architecture and operating principle of SAW Radio Frequency Identification Devices (RFID). Then it provides the designing scheme to the radio frequency front end of 915 MHz ultra high frequency (UHF) reader. At last, it lists the test method to the RF front end system, and system-level verification of RFID reader. The results show that, this design meets the performance index of 915 MHz reader, and has properties of reliability, efficiency and flexibility in configuration and maintenance. © 2014 Springer International Publishing Switzerland.

关键词： Radio waves

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Gbps key rate passive-state-preparation continuous-variable quantum key distribution within an access-network area

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Photonics Research 2024年第7期12卷 1485-1493页

作者： FEIYU JI PENG HUANG TAO WANG XUEQIN JIANG GUIHUA ZENG State Key Laboratory of Advanced Optical Communication Systems and Networks Center for Quantum Sensing and Information ProcessingSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Shanghai Research Center for Quantum Sciences Shanghai 201315China Hefei National Laboratory Hefei 230088China College of Information Science and Technology Donghua UniversityShanghai 201620China

The conventional Gaussian-modulated coherent-state quantum key distribution(QKD) protocol requires the sender to perform active modulations based on a true random number generator. Compared with it, the passive-state-preparation(PSP) continuous-variable quantum key distribution(CVQKD) equivalently performs modulations passively by exploring the intrinsic field fluctuations of a thermal source, which offers the prospect of chip integration QKD with low cost. In this paper, we propose and experimentally demonstrate a high-rate PSP-CVQKD scheme within an access-network area using high-bandwidth detectors in a continuous wave encoding and decoding way. By proposing effective methods for suppressing the noises during the PSP process and polarization multiplexing to decrease the photon leakage noises, we realize the high-intensity local oscillator transmission, thereby achieving coherent detection with high efficiency, low noise, and high bandwidth. The secure key rates over transmission distance of 5.005 km with and without consideration of the finite-size effect are 273.25 Mbps and 1.09 Gbps. The use of the PSP method boosts the asymptotic secret key rate of CVQKD to Gbps level for the first time, to our knowledge, within the range of the access network, which provides an effective and secure key distribution strategy for high-speed quantum cryptography access communication.

关键词： passive network distribution

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Extracting commuting patterns in railway networks through matrix decompositions 13

Extracting commuting patterns in railway networks through ma...

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2014 13th International Conference on Control Automation Robotics and Vision, ICARCV 2014

作者： Jere, Shashank Dauwels, Justin Asif, Muhammad Tayyab Vie, Nikola Mitro Cichocki, Andrzej Jaillet, Patrick School of Electrical and Electronic Engineering Nanyang Technological University Singapore Singapore Laboratory for Advanced Brain Signal Processing RIKEN Brain Science Institute Japan Laboratory for Information and Decision Systems MIT CambridgeMA United States Center for Future Urban Mobility Singapore-MIT Alliance for Research and Technology Singapore Singapore

ISBN: (纸本)9781479951994

With the rise in the population of the world's cities, understanding the dynamics of commuters' transportation patterns has become crucial in the planning and management of urban facilities and services. In this study, we analyze how commuter patterns change during different time instances such as between weekdays and weekends. To this end, we propose two data mining techniques, namely Common Orthogonal Basis Extraction (COBE), and Joint and Individual Variation Explained (JIVE) for Integrated Analysis of Multiple Data Types and apply them to smart card data available for passengers in Singapore. We also discuss the issues of model selection and interpretability of these methods. The joint and individual patterns can help transportation companies optimize their resources in light of changes in commuter mobility behavior. © 2014 IEEE.

关键词： Smart cards

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Energy Efficiency Maximization in RISs-Assisted UAVs-Based Edge Computing Network Using Deep Reinforcement Learning

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Big Data Mining and Analytics 2024年第4期7卷 1065-1083页

作者： Chuanwen Luo Jian Zhang Jianxiong Guo Yi Hong Zhibo Chen Shuyang Gu School of Information Science and Technology Beijing Forestry UniversityBeijing 100083Chinaand also with the Engineering Research Center for Forestry-Oriented Intelligent Information Processing of National Forestry and Grassland AdministrationBeijing 100083China Advanced Institute of Natural Sciences Beijing Normal UniversityZhuhai 519087Chinaand also with the Guangdong Key Lab of AI and Multi-Modal Data ProcessingBNU-HKBU United International CollegeZhuhai 519087China Department of Computer Information Systems Texas A&M University-Central TexasKilleenTX 76549USA

Edge Computing(EC)pushes computational capability to the Terrestrial Devices(TDs),providing more efficient and faster computing *** Aerial Vehicles(UAVs)equipped with EC servers can be flexibly deployed,even in complex terrains,to provide mobile computing services at all ***,UAVs can establish an air-to-ground line-of-sight link with TDs to improve the quality of communication ***,the UAV-to-TD link may be obstructed by ground obstacles such as buildings or trees,leading to sub-optimal data transmission *** surmount this issue,Reconfigurable Intelligent Surfaces(RISs)emerge as a promising technology capable of intelligently reflecting signals to enhance communication quality between UAVs and *** this paper,we consider the RISs-assisted multi-UAVs collaborative edge Computing Network(RUCN)in urban environment,in which we study the computational offloading *** goal is to maximize the overall energy efficiency of UAVs by jointly optimizing the flight duration and trajectories of UAVs,and the phase shifts of *** is worth noting that this problem has been formally established as ***,we propose the Deep Deterministic Policy Gradients based UAV Trajectory and RIS Phase shift optimization algorithm(UTRP-DDPG)to solve this complex optimization *** results of extensive numerical experiments show that the proposed algorithm outperforms the other benchmark algorithms under various parameter ***,the UTRP-DDPG algorithm improves the UAV energy efficiency by at least 2%compared to DQN algorithm.

关键词： edge computing computing offloading Unmanned Aerial Vehicle(UAV) Reconfigurable Intelligent Surface(RIS) deep reinforcement learning

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Predicting traffic speed in urban transportation subnetworks for multiple horizons 13

Predicting traffic speed in urban transportation subnetworks...

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2014 13th International Conference on Control Automation Robotics and Vision, ICARCV 2014

作者： Dauwels, Justin Aslam, Aamer Asif, Muhammad Tayyab Zhao, Xinyue Vie, Nikola Mitro Cichocki, Andrzej Jaillet, Patrick School of Electrical and Electronic Engineering Nanyang Technological University Singapore Singapore Laboratory for Advanced Brain Signal Processing Brain Science Institute RIKEN Saitama Japan Laboratory for Information and Decision Systems MIT CambridgeMA United States Center for Future Urban Mobility Singapore-MIT Alliance for Research and Technology Singapore Singapore

ISBN: (纸本)9781479951994

Traffic forecasting is increasingly taking on an important role in many intelligent transportation systems (ITS) applications. However, prediction is typically performed for individual road segments and prediction horizons. In this study, we focus on the problem of collective prediction for multiple road segments and prediction-horizons. To this end, we develop various matrix and tensor based models by applying partial least squares (PLS), higher order partial least squares (HO-PLS) and N-way partial least squares (N-PLS). These models can simultaneously forecast traffic conditions for multiple road segments and prediction-horizons. Moreover, they can also perform the task of feature selection efficiently. We analyze the performance of these models by performing multi-horizon prediction for an urban subnetwork in Singapore. © 2014 IEEE.

关键词： Forecasting

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Long-distance continuous-variable measurement-device-independent quantum key distribution with discrete modulation

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Physical Review A 2019年第2期99卷 022322-022322页

作者： Hong-Xin Ma Peng Huang Dong-Yun Bai Tao Wang Shi-Yu Wang Wan-Su Bao Gui-Hua Zeng Zhengzhou Information Science and Technology Institute Zhengzhou 450004 China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China Hefei Anhui 230026 China State Key Laboratory of Advanced Optical Communication Systems and Networks and Center of Quantum Information Sensing and Processing Shanghai Jiao Tong University Shanghai 200240 China

We propose a long-distance continuous-variable measurement-device-independent quantum key distribution (CV-MDI-QKD) protocol with discrete modulation. This kind of discrete-modulated scheme has good compatibility with efficient error correction code, which leads to higher reconciliation efficiency even at low signal-to-noise ratio. Security analysis shows that the proposed protocol is secure against arbitrary collective attacks in the asymptotic limit with the proper use of decoy states. With the use of discrete modulation, the proposed CV-MDI-QKD protocol has simpler implementation and outperforms previous protocols in terms of achievable maximal transmission distance, which precisely solved the bottleneck of the original Gaussian-modulated CV-MDI-QKD protocol.

关键词： Quantum communication Quantum cryptography Quantum information processing with continuous variables

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Parallel processor system specific for Monte Carlo analysis based on ring bus architecture 6

Parallel processor system specific for Monte Carlo analysis ...

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6th International Workshop on Computational Electronics, IWCE 1998

作者： Kurino, H. Ono, T. Kuroishi, N. Kawata, T. Miyakawa, N. Fukase, M. Aibara, R. Koyanagi, M. Intelligent System Design Lab. Dept. of Machine Intelligent and Systems Engineering Graduate School of Engineering Tohoku University Aoba-yama 01 Sendai980-8579 Japan Advanced Technology and Engineering Center Fuji Xerox Co. Ltd. Japan Faculty of Science and Technology Hirosaki University Japan Information Processing Center Hiroshima University Japan

ISBN: (纸本)0780343697

We have developed a new parallel processor system specific for the MC analysis, to dramatically reduce the calculation time. Our parallel processor system is based on ring bus architecture. The RISC micro processor chip, which contains a ring bus interface unit (RBIU), a floating point arithmetic unit (FAU) and so on, was also developed for our system. Speed up ratio compared with a single processor reached to 13.5 at 23 PEs. © 1996 IEEE.

关键词： Digital arithmetic

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