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optical Fiber communication Conference, OFC 2018

作者： Li, Peixuan Yi, Lilin Xue, Lei Hu, Weisheng State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China

We experimentally demonstrate 100Gb/s/λ IM/DD transmission over 25km SSMF using 20G-class DML and PIN enabled by convolutional neural network based equalization technique. Transmission performance in C-band and O-ban... 详细信息

ISBN: (纸本)9781943580385

关键词： Machine learning

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Cancelable remote quantum fingerprint templates protection scheme

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Chinese Physics B 2017年第9期26卷 39-47页

作者：廖骎郭迎黄端 School of Information Science and Engineering Central South University State Key Laboratory of Advanced Optical Communication Systems and Networks and Center of Quantum Information Sensing and ProcessingShanghai Jiao Tong University

With the increasing popularity of fingerprint identification technology, its security and privacy have been paid much attention. Only the security and privacy of biological information are insured, the biological technology can be better accepted and used by the public. In this paper, we propose a novel quantum bit（qbit）-based scheme to solve the security and privacy problem existing in the traditional fingerprint identification system. By exploiting the properties of quantum mechanics, our proposed scheme, cancelable remote quantum fingerprint templates protection scheme, can achieve the unconditional security guaranteed in an information-theoretical sense. Moreover, this novel quantum scheme can invalidate most of the attacks aimed at the fingerprint identification system. In addition, the proposed scheme is applicable to the requirement of remote communication with no need to worry about its security and privacy during the transmission. This is an absolute advantage when comparing with other traditional methods. Security analysis shows that the proposed scheme can effectively ensure the communication security and the privacy of users＇ information for the fingerprint identification.

关键词： quantum communication fingerprint identification cancelable template

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Programmable Linear RAM: A New Flash Memory-based Memristor for Artificial Synapses and Its Application to Speech Recognition system

Programmable Linear RAM: A New Flash Memory-based Memristor ...

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International Electron Devices Meeting (IEDM)

作者： Shifan Gao Guangjun Yang Xiang Qiu Chun Yang Cheng Zhang Binhan Li Chao Gao Hong Jiang Zhexian Wang Jian Hu Jun Xiao Bo Zhang Choonghyun Lee Yi Zhao Weiran Kong College of Information Science & Electronic Engineering Zhejiang University Hangzhou China Shanghai Huahong Grace Semiconductor Manufacturing Corporation China Flash Billion Semiconductor Co. Ltd. Hangzhou China State Key Laboratory of Advanced Optical Communication Systems and Networks Peking University Beijing China

In this work, a new type of flash memory-based memristor, named programmable linear random-access memory (PLRAM), is presented to store analog synaptic weights in a single flash memory cell. A PLRAM cell with a self-calibrating program/erase scheme can provide very stable and repeatable analog memory states up to 7 bits in a single cell, which is suitable for an artificial synapse in the neural network. The physical implementation of a discrete Fourier transform on PLRAM arrays shows a remarkably good agreement with theoretical calculations. By taking nonlinearity effects on both forward propagation and back-propagation into consideration, a highly manufacturable speech recognition system, which consists of a 5-layer fully connected neural network (360k artificial synapses, 1576 neurons, and peripheral circuits) has been successfully built on 200 mm wafers. For the first time, the high accuracy of speech recognition (>90%) on 8 different Chinese speech words is demonstrated.

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Practical security of continuous-variable quantum key distribution with reduced optical attenuation

arXiv

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arXiv 2019年

作者： Zheng, Yi Huang, Peng Huang, Anqi Peng, Jinye Zeng, Guihua College of Information Science and Technology Northwest University Xi’anShaanxi710127 China State Key Laboratory of Advanced Optical Communication Systems and Networks Center of Quantum Information Sensing and Processing Shanghai Jiao Tong University Shanghai200240 China Institute for Quantum Information & State Key Laboratory of High Performance Computing College of Computer National University of Defense Technology Changsha410073 China Greatwall Quantum Laboratory China Greatwall Technology Changsha410205 China

In a practical CVQKD system, the optical attenuator can adjust the Gaussian-modulated coherent states and the local oscillator signal to an optimal value for guaranteeing the security of the system and optimizing the performance of the system. However, the performance of the optical attenuator may deteriorate due to the intentional and unintentional damage of the device. In this paper, we investigate the practical security of a CVQKD system with reduced optical attenuation. We find that the secret key rate of the system may be overestimated based on the investigation of parameter estimation under the effects of reduced optical attenuation. This opens a security loophole for Eve to successfully perform an intercept-resend attack in a practical CVQKD system. To close this loophole, we add an optical fuse at Alice’s output port and design a scheme to monitor the level of optical attenuation in real time, which can make the secret key rate of the system evaluated precisely. The analysis shows that these countermeasures can effectively resist this potential attack. Copyright © 2019, The Authors. All rights reserved.

关键词： Electromagnetic wave attenuation

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Coherent Bidirectional UDWDM-PON for 1000 ONUs with Real-Time Digital Signal Processing

Coherent Bidirectional UDWDM-PON for 1000 ONUs with Real-Tim...

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European Conference on optical communication (ECOC)

作者： Xiang Li Ming Luo Tao Zeng Lilin Yi Jie Li Lingheng Meng Shaohua Yu State Key Laboratory Wuhan Research Institute of Posts & Telecommunications Wuhan Hubei China State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

We experimentally demonstrate the first bidirectional coherent UDWDM-PON with real-time digital signal processing supporting 1000 users at a capacity of 10-Tb/s in downlink and 2-Tb/s in uplink. More than 28-dB power ... 详细信息

关键词： optical attenuators optical filters optical fibers optical transmitters optical receivers Downlink

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Nonlinear Equalization by SVM Classification Enabled 50-Gb/s PAM-4 Transmission in NG-EPON with 10-G Class Optics

Nonlinear Equalization by SVM Classification Enabled 50-Gb/s...

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International Conference on advanced Infocomm Technology (ICAIT)

作者： Jiasheng Yu Meihua Bi Xin Miao Longsheng Li Weisheng Hu School of Communication Engineering Hangzhou Dianzi University Hangzhou ZheJiang province China State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai China

ISBN: (纸本)9781538679371;9781538679364

In this paper, we propose a new equalization algorithm based on SVM combined with DFE structure to improve performance of high-speed bandwidth limitation system. A comparison between traditional DFE, FFE and SVM-DFE are employed to prove the feasibility of our algorithm in 50-Gb/s PAM-4 transmission experiment with lOG optics system. Experimental results show that compared with the traditional DFE, the receiver sensitivity used SVM-DFE can be improved by ~1-dBm @BER=3.8e-3.

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Silicon Photonics for Radio-Frequency Signal Processing

Silicon Photonics for Radio-Frequency Signal Processing

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OptoElectronics and communications Conference, OECC

作者： Linjie Zhou Xinyi Wang Jiayu Jing Liangjun Lu Jianping Chen Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science State key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai P.R

We report two radio-frequency signal processing functions using silicon photonic integration. Arbitrary waveform generation and high-resolution RF signal filtering are realized based on a loopback arrayed-waveguide gr... 详细信息

ISBN: (纸本)9781538691465

关键词： optical filters optical pulses Photonics High-speed optical techniques optical waveguides Radio frequency optical interferometry

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Fiber and Integrated Thermo-optic Devices Based on 2D materials

Fiber and Integrated Thermo-optic Devices Based on 2D materi...

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OptoElectronics and communications Conference, OECC

作者： Kan Wu State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai China

We summarize our recent work on thermo-optic devices based on two-dimensional (2D) materials. Thermo-optic properties of 2D materials are characterized and high-speed switches are demonstrated both on optical fiber sy... 详细信息

ISBN: (纸本)9781538691465

关键词： optical fibers optical fiber devices optical switches Two dimensional displays optical fiber communication High-speed optical techniques

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Security bound of continuous-variable measurement-device-independent quantum key distribution with imperfect phase reference calibration

arXiv

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arXiv 2019年

作者： Ma, Hong-Xin Huang, Peng Wang, Tao Bai, Dong-Yun Wang, Shi-Yu Bao, Wan-Su Zeng, Gui-Hua Henan Key Laboratory of Quantum Information and Cryptography Zhengzhou Information Science and Technology Institute Zhengzhou Henan450001 China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China Hefei Anhui230026 China State Key Laboratory of Advanced Optical Communication Systems Networks and Center of Quantum Information Sensing and Processing Shanghai Jiao Tong University Shanghai200240 China

Phase reference calibration is a necessary procedure in practical continuous-variable measurement-deviceindependent quantum key distribution (CV-MDI-QKD) for the need of Bell-state Measurement (BSM). However, the phase reference calibration may become imperfect in practical applications. We explored the practical security of CV-MDI-QKD with imperfect phase reference calibration under realistic conditions of lossy and noisy quantum channel. Specifically, a comprehensive framework is developed to model and characterize the imperfection of practical phase reference calibration operation, which is mainly caused by the non-synchronization of two remote lasers in senders. Security analysis shows that the imperfect phase reference calibration has significant side effects on the performance and security of the CV-MDI-QKD protocol. A tight security bound to excess noise introduced by imperfect phase reference calibration is derived for reverse reconciliation against arbitrary collective attacks in the asymptotic limit, and the tolerance of the CV-MDI-QKD protocol to this excess noise is also obtained. This security analysis framework can eliminate the security hazards caused by imperfect phase reference calibration without changing the existing CV-MDI-QKD system structure. Copyright © 2019, The Authors. All rights reserved.

关键词： Calibration

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Demonstration of 50Gb/s/λ symmetric PAM4 TDM-PON with 10G-class optics and DSP-free ONUs in the O-band

Demonstration of 50Gb/s/λ symmetric PAM4 TDM-PON with 10G-c...

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optical Fiber communication Conference, OFC 2018

作者： Zhang, Kuo Zhuge, Qunbi Xin, Haiyun Xing, Zhenping Xiang, Meng Fan, Sujie Yi, Lilin Hu, Weisheng Plant, David V. State Key Lab of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China Department of Electrical and Computer Engineering McGill University MontrealQCH3A 2A7 Canada Ciena Corporation OttawaONK2K 0L1 Canada

We demonstrate a 50Gb/s/λ PAM4 TDM-PON based on 10G-class DMLs and PDs in Oband with downlink pre-compensation and uplink post-equalization. Results show that, without any DSP in the ONU, 29dB optical power budget is... 详细信息

ISBN: (纸本)9781943580385

关键词： Budget control

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