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High-rate and high-capacity measurement-deviceindependent quantum key distribution with Fibonacci matrix coding in free space

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science China(Information sciences) 2018年第6期61卷 227-237页

作者： Hong LAI Mingxing LUO Josef PIEPRZYK Jun ZHANG Lei PAN Mehmet A.ORGUN School of Computer and Information Science and Centre for Research and Innovation in Software Engineering (RISE) Southwest University Information Security and National Computing Grid Laboratory School of Information Science and TechnologySouthwest Jiaotong University School of Electrical Engineering and Computer Science Queensland University of Technology Institute of Computer Science Polish Academy of Sciences School of Information Technology Deakin University Department of Computing Macquarie University Faculty of Information Technology Macau University of Science and Technology

This paper proposes a high-rate and high-capacity measurement-device-independent quantum key distribution(MDI-QKD) protocol with Fibonacci-valued and Lucas-valued orbital angular momentum(OAM) entangled states in free space. In the existing MDI-OAM-QKD protocols, the main encoding algorithm handles encoded numbers in a bit-by-bit manner. To design a fast encoding algorithm, we introduce a Fibonacci matrix coding algorithm, by which, encoded numbers are separated into segments longer than one bit. By doing so, when compared to the existing MDI-OAM-QKD protocols, the new protocol can effectively increase the key rate and the coding capacity. This is because Fibonacci sequences are used in preparing OAM entangled states, reducing the misattribution errors(which slow down the execution cycle of the entire QKD) in QKD protocols. Moreover, our protocol keeps the data blocks as small as possible, so as to have more blocks in a given time interval. Most importantly, our proposed protocol can distill multiple Fibonacci key matrices from the same block of data, thus reducing the statistical fluctuations in the sample and increasing the final QKD rate. Last but not the least, the sender and the receiver can omit classical information exchange and bit flipping in the secure key distillation stage.

关键词： measurement-device-independent quantum key distribution Fibonacci-matrix coding free space orbital angular momentum bit flipping misattribution errors

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Energy efficient beamforming design for MISO non-orthogonal multiple access systems

arXiv

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arXiv 2019年

作者： Al-Obiedollah, Haitham Cumanan, Kanapathippillai Thiyagalingam, Jeyarajan Burr, Alister G. Ding, Zhiguo Dobre, Octavia A. Department of Electronic Engineering University of York YorkYO10 5DD United Kingdom Scientific Computing Department of Rutherford Appleton Laboratory Science and Technology Facilities Council Harwell Campus Oxford United Kingdom School of Electrical and Electronic Engineering University of Manchester Manchester United Kingdom Department of Electrical and Computer Engineering Memorial University St. JohnsNLA1B 3X5 Canada

When considering the future generation wireless networks, non-orthogonal multiple access (NOMA) represents a viable multiple access technique for improving the spectral efficiency. The basic performance of NOMA is often enhanced using downlink beamforming and power allocation techniques. Although downlink beamforming has been previously studied with different performance criteria, such as sum-rate and max-min rate, it has not been studied in the multiuser, multiple-input single-output (MISO) case, particularly with the energy efficiency criteria. In this paper, we investigate the design of an energy efficient beamforming technique for downlink transmission in the context of a multiuser MISO-NOMA system. In particular, this beamforming design is formulated as a global energy efficiency (GEE) maximization problem with minimum user rate requirements and transmit power constraints. By using the sequential convex approximation (SCA) technique and the Dinkelbach’s algorithm to handle the non-convex nature of the GEE-Max problem, we propose two novel algorithms for solving the downlink beamforming problem for the MISO-NOMA system. Our evaluation of the proposed algorithms shows that they offer similar optimal designs and are effective in offering substantial energy efficiencies compared to the designs based on conventional methods. Copyright © 2019, The Authors. All rights reserved.

关键词： Energy efficiency

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Laser-Damage Attack Against Optical Attenuators in Quantum Key Distribution

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Physical Review Applied 2020年第3期13卷 034017-034017页

作者： Anqi Huang Ruoping Li Vladimir Egorov Serguei Tchouragoulov Krtin Kumar Vadim Makarov Institute for Quantum Information & State Key Laboratory of High Performance Computing College of Computer National University of Defense Technology Changsha 410073 People’s Republic of China Institute for Quantum Computing University of Waterloo Waterloo Ontario N2L 3G1 Canada Department of Electrical and Computer Engineering University of Waterloo Waterloo Ontario N2L 3G1 Canada Department of Physics and Astronomy University of Waterloo Waterloo Ontario N2L 3G1 Canada Faculty of Photonics and Optical Information ITMO University 199034 Kadetskaya line 3b St. Petersburg Russia QGLex Incorporated 105 Schneider Road Suite 111 Ottawa Ontario K2K 1Y3 Canada Russian Quantum Center Skolkovo Moscow 121205 Russia Shanghai Branch National Laboratory for Physical Sciences at Microscale and CAS Center for Excellence in Quantum Information University of Science and Technology of China Shanghai 201315 People’s Republic of China NTI Center for Quantum Communications National University of Science and Technology MISiS Moscow 119049 Russia

Many quantum key distribution systems employ a laser followed by an optical attenuator to prepare weak coherent states in the source. Their mean photon number must be precalibrated to guarantee the security of key distribution. Here we experimentally show that this calibration can be broken with a high-power laser attack. We test four fiber-optic attenuator types used in quantum key distribution systems, and find that two of them exhibit a permanent decrease in attenuation after laser damage. This results in higher mean photon numbers in the prepared states and may allow an eavesdropper to compromise the key.

关键词： Light-matter interaction Photon statistics Photonics Quantum communication Quantum cryptography Quantum optics Devices Fiber lasers

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Sleep Disorder Classification Method based on Logistic Regression with Apnea-ECG Dataset 2019

Sleep Disorder Classification Method based on Logistic Regre...

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2019 International Conference on Artificial Intelligence and Advanced Manufacturing, AIAM 2019

作者： Cai, Liangming Chen, Chunqiang Wang, Xiaoling Yang, Xiong Lin, Shurui Huang, Jiefeng Jiang, Jinping Datta, Rituparna Du, Min Jiang, Haiyan Zhu, Minchen Huang, Jingshan College of Physics and Information Engineering Fuzhou University Fuzhou China Zhicheng College University of South Alabama United States HaiXi Institutes Chinese Academy of Science Fuzhou China Zhicheng College Fuzhou University Fuzhou China Department of Respiratory Medicine First Affiliated Hospital of Fujian Medical University Fuzhou China College of Electrical Engineering and Automation Fuzhou University Fuzhou China School of Computing University of South Alabama Mobile United States Provincial Key Laboratory of Eco-industrial Green Technology Wuyi College Wuyishan China College of Mathematics and Computer Science Fuzhou University Fuzhou China Fuzhou University Fuzhou China University of South Alabama United States

ISBN: (纸本)9781450372022

Adequate sleep is significant for human to actively pursue daily activity. On the other hand, insomnia is directly proportional to aging and health deterioration. Sleep disorder classification is important for medical scientists as well as machine learning researchers. In the paper, we have developed a sleep disorder classification method for Electrocardiogram (ECG) data. The data set have two labels;sleep disorder or not, which can be categorized as binary output. As a result, logistic regression is used as classification technique. For initial experimentation, an existing data set is used. The data set consists of every 10 second data up to 6000 seconds for 35 patients. We have used 70% data for training, and 30% data for testing purpose. Our results from logistic regression show that the logistic regression method is efficient to detect sleep disorders. The prediction result is found to be 59%. The future research in this direction would be to take data from hospitals and use our developed algorithm for sleep disorder classification and prediction. © 2019 Association for computing Machinery.

关键词： Electrocardiograms

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Accurate Recovery of Internet Traffic Data: A Sequential Tensor Completion Approach

Accurate Recovery of Internet Traffic Data: A Sequential Ten...

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作者： Xie, Kun Wang, Lele Wang, Xin Xie, Gaogang Wen, Jigang Zhang, Guangxing Cao, Jiannong Zhang, Dafang College of Computer Science and Electronics Engineering Hunan University Changsha410006 China CAS Key Laboratory of Network Data Science and Technology Institute of Computing Technology Chinese Academy of Sciences Beijing100864 China Department of Electrical and Computer Engineering State University of New York at Stony Brook Stony BrookNY11794 United States Network Research Center Institute of Computing Technology Chinese Academy of Sciences Beijing100864 China Department of Computing Hong Kong Polytechnic University Hong Kong Hong Kong

The inference of traffic volume of the whole network from partial traffic measurements becomes increasingly critical for various network engineering tasks, such as capacity planning and anomaly detection. Previous studies indicate that the matrix completion is a possible solution for this problem. However, as a 2-D matrix cannot sufficiently capture the spatial-temporal features of traffic data, these approaches fail to work when the data missing ratio is high. To fully exploit hidden spatial-temporal structures of the traffic data, this paper models the traffic data as a 3-way traffic tensor and formulates the traffic data recovery problem as a low-rank tensor completion problem. However, the high computation complexity incurred by the conventional tensor completion algorithms prevents its practical application for the traffic data recovery. To reduce the computation cost, we propose a novel sequential tensor completion algorithm, which can efficiently exploit the tensor decomposition result based on the previous traffic data to derive the tensor decomposition upon arriving of new data. Furthermore, to better capture the changes of data correlation over time, we propose a dynamic sequential tensor completion algorithm. To the best of our knowledge, we are the first to propose sequential tensor completion algorithms to significantly speed up the traffic data recovery process. This facilitates the modeling of Internet traffic with the tensor to well exploit the hidden structures of traffic data for more accurate missing data inference. We have done extensive simulations with the real traffic trace as the input. The simulation results demonstrate that our algorithms can achieve significantly better performance compared with the literature tensor and matrix completion algorithms even when the data missing ratio is high. © 1993-2012 IEEE.

关键词： Tensors

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TOI-5205 b: A Short-period Jovian Planet Transiting a Mid-M Dwarf

arXiv

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arXiv 2022年

作者： Kanodia, Shubham Mahadevan, Suvrath Libby-Roberts, Jessica Stefansson, Gudmundur Cañas, Caleb I. Piette, Anjali A.A. Boss, Alan Teske, Johanna Chambers, John Zeimann, Greg Monson, Andrew Robertson, Paul Ninan, Joe P. Lin, Andrea S.J. Bender, Chad F. Cochran, William D. Diddams, Scott A. Gupta, Arvind F. Halverson, Samuel Hawley, Suzanne Kobulnicky, Henry A. Metcalf, Andrew J. Parker, Brock A. Powers, Luke Ramsey, Lawrence W. Roy, Arpita Schwab, Christian Swaby, Tera N. Terrien, Ryan C. Wisniewski, John Earth and Planets Laboratory Carnegie Institution for Science 5241 Broad Branch Road NW WashingtonDC20015 United States Department of Astronomy & Astrophysics 525 Davey Laboratory The Pennsylvania State University University ParkPA16802 United States Center for Exoplanets and Habitable Worlds 525 Davey Laboratory The Pennsylvania State University University ParkPA16802 United States ETH Zurich Institute for Particle Physics & Astrophysics Switzerland Henry Norris Russell Fellow United States Department of Astrophysical Sciences Princeton University 4 Ivy Lane PrincetonNJ08540 United States NASA Goddard Space Flight Center 8800 Greenbelt Road GreenbeltMD20771 United States Hobby Eberly Telescope University of Texas Austin AustinTX78712 United States Steward Observatory The University of Arizona 933 N. Cherry Avenue TucsonAZ85721 United States Department of Physics & Astronomy University of California Irvine IrvineCA92697 United States Department of Astronomy and Astrophysics Tata Institute of Fundamental Research Homi Bhabha Road Colaba Mumbai400005 India McDonald Observatory Department of Astronomy The University of Texas Austin United States Center for Planetary Systems Habitability The University of Texas Austin United States Electrical Computer & Energy Engineering University of Colorado 425 UCB BoulderCO80309 United States Department of Physics University of Colorado 2000 Colorado Avenue BoulderCO80309 United States Time and Frequency Division National Institute of Standards and Technology 325 Broadway BoulderCO80305 United States Jet Propulsion Laboratory 4800 Oak Grove Drive PasadenaCA91109 United States Department of Astronomy University of Washington Box 351580 SeattleWA98195 United States Department of Physics & Astronomy University of Wyoming LaramieWY82070 United States Space Vehicles Directorate Air Force Research Laboratory 3550 Aberdeen Ave. SE AFB KirtlandNM87117 United States Space Telescope Sc

We present the discovery of TOI-5205 b, a transiting Jovian planet orbiting a solar metallicity M4V star, which was discovered using Transiting Exoplanet Survey Satellite photometry and then confirmed using a combination of precise radial velocities, ground-based photometry, spectra, and speckle imaging. TOI-5205 b has one of the highest mass ratios for M dwarf planets with a mass ratio of almost 0.3%, as it orbits a host star that is just 0.392 ± 0.015 M☉. Its planetary radius is 1.03 ± 0.03 RJ, while the mass is 1.08 ± 0.06 MJ. Additionally, the large size of the planet orbiting a small star results in a transit depth of ∼ 7%, making it one of the deepest transits of a confirmed exoplanet orbiting a main-sequence star. The large transit depth makes TOI-5205 b a compelling target to probe its atmospheric properties, as a means of tracing the potential formation pathways. While there have been radial-velocity-only discoveries of giant planets around mid-M dwarfs, this is the first transiting Jupiter with a mass measurement discovered around such a low-mass host star. The high mass of TOI-5205 b stretches conventional theories of planet formation and disk scaling relations that cannot easily recreate the conditions required to form such planets. © 2022, CC BY.

关键词： Photometry

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An efficient quantum blind digital signature scheme

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science China(Information sciences) 2017年第8期60卷 226-239页

作者： Hong LAI Mingxing LUO Josef PIEPRZYK Zhiguo QU Shudong LI Mehmet A.ORGUN College of Computer and Information Science Southwest University Information Security and National Computing Grid Laboratory School of Information Science and TechnologySouthwest Jiaotong University School of Electrical Engineering and Computer Science Queensland University of Technology Institute of Computer Science Polish Academy of Sciences School of Computer and Software Nanjing University of Information Science and Technology College of Mathematics and Information Science Shandong Technology and Business University School of Computer Science National University of Defense Technology Department of Computing Macquarie University Faculty of Information Technology Macau University of Science and Technology

Recently, many quantum digital signature(QDS) schemes have been proposed to authenticate the integration of a message. However, these quantum signature schemes just consider the situation for bit messages,and the signing-verifying of one-bit modality. So, their signature efficiency is very low. In this paper, we propose a scheme based on an application of Fibonacci-, Lucas-and Fibonacci-Lucas matrix coding to quantum digital signatures based on a recently proposed quantum key distribution(QKD) system. Our scheme can sign a large number of digital messages every time. Moreover, these special matrices provide a method to verify the integration of information received by the participants, to authenticate the identity of the participants, and to improve the efficiency for signing-verifying. Therefore, our signature scheme is more practical than the existing schemes.

关键词： blind quantum digital signature Fibonacci- Lucas-and Fibonacci-Lucas matrix coding digital messages signing-verifying modality

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Spatial sparse subspace clustering for compressive spectral imaging

arXiv

引用

arXiv 2019年

作者： Zhu, Jianchen Zhang, Tong Zhao, Shengjie Hinojosa, Carlos Liu, Zengli Arce, Gonzalo R. Key Laboratory of Embedded System and Service Computing Ministry of Education School of Software Engineering Tongji University Shanghai201804 China School of Electronic and Information Engineering Tongji University Shanghai201804 China Department of System Engineering and Informatics Universidad Industrial de Santander Bucaramanga680002 Colombia Institute of information engineering and automation Computer Center Kunming University of Science and Technology Kunming650500 China Department of Electrical and Computer Engineering University of Delaware NewarkDE19716 United States

This paper aims at developing a clustering approach with spectral images directly from CASSI compressive measurements. The proposed clustering method first assumes that compressed measurements lie in the union of multiple low-dimensional subspaces. Therefore, sparse subspace clustering (SSC) is an unsupervised method that assigns compressed measurements to their respective subspaces. In addition, a 3D spatial regularizer is added into the SSC problem, thus taking full advantages of the spatial information contained in spectral images. The performance of the proposed spectral image clustering approach is improved by taking optimal CASSI measurements obtained when optimal coded apertures are used in CASSI system. Simulation with one real dataset illustrates the accuracy of the proposed spectral image clustering approach. Copyright © 2019, The Authors. All rights reserved.

关键词： Spectroscopy

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Plasmonic antenna coupling to hyperbolic phonon-polaritons for sensitive and fast mid-infrared photodetection with graphene

arXiv

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arXiv 2020年

作者： Castilla, Sebastián Vangelidis, Ioannis Pusapati, Varun-Varma Goldstein, Jordan Autore, Marta Slipchenko, Tetiana Rajendran, Khannan Kim, Seyoon Watanabe, Kenji Taniguchi, Takashi Martín-Moreno, Luis Englund, Dirk Tielrooij, Klaas-Jan Hillenbrand, Rainer Lidorikis, Elefterios Koppens, Frank H.L. ICFO - Institut de Ciències Fotòniques Barcelona Institute of Science and Technology CastelldefelsBarcelona08860 Spain Department of Materials Science and Engineering University of Ioannina Ioannina45110 Greece Department of Electrical Engineering and Computer Sciences Massachusetts Institute of Technology CambridgeMA02139 United States CIC nanoGUNE E-20018 Donostia-San Sebastián Spain Instituto de Ciencia de Materiales de Aragón Departamento de Física de la Materia Condensada CSIC-Universidad de Zaragoza Zaragoza50009 Spain Advanced Materials Laboratory National Institute for Material Science Tsukuba305-0044 Japan Barcelona Institute of Science and Technology Campus UAB Bellaterra Barcelona08193 Spain IKERBASQUE Basque Foundation for Science Bilbao48013 Spain Institute of Materials Science and Computing Ioannina45110 Greece ICREA - Institució Catalana de Recerca i Estudis Avançats Barcelona08010 Spain

Integrating and manipulating the nano-optoelectronic properties of Van der Waals heterostructures can enable unprecedented platforms for photodetection and sensing. The main challenge of infrared photodetectors is to funnel the light into a small nanoscale active area and efficiently convert it into an electrical signal. Here, we overcome all of those challenges in one device, by efficient coupling of a plasmonic antenna to hyperbolic phonon-polaritons in hexagonal-BN to highly concentrate mid-infrared light into a graphene pn-junction. We balance the interplay of the absorption, electrical and thermal conductivity of graphene via the device geometry. This novel approach yields remarkable device performance featuring room temperature high sensitivity (NEP of 82 pW/√Hz) and fast rise time of 17 nanoseconds (setup-limited), among others, hence achieving a combination currently not present in the state-of-the-art graphene and commercial mid-infrared detectors. We also develop a multiphysics model that shows excellent quantitative agreement with our experimental results and reveals the different contributions to our photoresponse, thus paving the way for further improvement of these types of photodetectors even beyond mid-infrared range. Copyright © 2020, The Authors. All rights reserved.

关键词： Graphene

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Merging Deep Learning, Chemistry, and Diffraction for High-Throughput Material Structure Prediction

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Microscopy and Microanalysis 2019年第S2期25卷 168-169页

作者： Matthew L. Gong Brandon D. Miller Ray R. Unocic Khallid Hattar Bryan Reed Dan Masiel Tolga Tasdizen Jeffery A. Aguiar Idaho National Laboratory Nuclear Materials Department Idaho Falls IdahoUSA. University of Utah Scientific Computing Imaging Institute Department of Electrical and Computer Engineering Salt Lake City UtahUSA. Oak Ridge National Laboratory Center for Nanophase Materials Science Oak Ridge TennesseeUSA. Sandia National Laboratories Center for Integrated Nanotechnologies Albuquerque New MexicoUSA. Integrated Dynamic Electron Solutions Pleasanton CaliforniaUSA.

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