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Gaussian-modulated coherent-state measurement-device-independent quantum key distribution

Physical Review A 2014年第4期89卷 042335-042335页

作者： Xiang-Chun Ma Shi-Hai Sun Mu-Sheng Jiang Ming Gui Lin-Mei Liang College of Science National University of Defense Technology Changsha 410073 People's Republic of China Centre for Quantum Information and Quantum Control Department of Physics and Department of Electrical and Computer Engineering University of Toronto Toronto Ontario Canada M5S 3G4 State Key Laboratory of High Performance Computing National University of Defense Technology Changsha 410073 People's Republic of China

Measurement-device-independent quantum key distribution (MDI-QKD), leaving the detection procedure to the third partner and thus being immune to all detector side-channel attacks, is very promising for the construction of high-security quantum information networks. We propose a scheme to implement MDI-QKD, but with continuous variables instead of discrete ones, i.e., with the source of Gaussian-modulated coherent states, based on the principle of continuous-variable entanglement swapping. This protocol not only can be implemented with current telecom components but also has high key rates compared to its discrete counterpart; thus it will be highly compatible with quantum networks.

关键词： GAUSSIAN distribution COHERENT states QUANTUM networks (Optics) QUANTUM entanglement BELL'S theorem PARAMETER estimation

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A method to check liveness of WS3PR

A method to check liveness of WS3PR

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Chinese Control Conference (CCC)

作者： ShouGuang Wang Miao Liu MengChu Zhou WenHui Wu School of Information & Electronic Engineering Zhejiang Gongshang University Hangzhou China State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an China School of Electro-Mechanical Engineering Xidian University Xi'an China Ministry of Education Tongji University Shanghai China Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA

Petri nets are widely used to model flexible manufacturing systems (FMSs) because they can help analyze the properties and synthesize deadlock-free supervisory controllers of FMS. Weighted System of Simple Sequential Processes with Resources (WS 3 PR) is an important subclass of Petri nets that can well model many FMSs. This work first gives new algorithms to check liveness for a WS3PR net via its subnet trees and structure. Then the computation complexity for the proposed method is shown in this paper, to be polynomial under certain limitations. Finally, sufficient conditions for deciding liveness of a WS 3 PR are established. An example is used to illustrate the results.

关键词： Petri nets Educational institutions Artificial neural networks Laboratories Manufacturing systems Electronic mail Modeling

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Understanding the implications of virtual machine management on processor microarchitecture design

Understanding the implications of virtual machine management...

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2013 IEEE International Symposium on Performance Analysis of systems and Software, ISPASS 2013

作者： Sui, Xiufeng Sun, Tao Li, Tao Zhang, Lixin Advanced Computer Systems Laboratory Institute of Computing Technology CAS Beijing China Computer Science and Technology Department University of Science and Technology of China Hefei China Dept. of Electrical and Computer Engineering University of Florida United States

ISBN: (纸本)9781467357777

Cloud computing has demonstrated tremendous capability in a wide spectrum of online services. Virtualization provides an efficient solution to the utilization of modern multicore processor systems while affording significant flexibility. The growing popularity of virtualized datacenters motivates deeper understanding of the interactions between virtual machine management and the micro-architecture behaviors of the privileged domain. We argue that these behaviors must be factored into the design of processor microarchitecture in virtualized datacenters. In this work, we use performance counters on modern servers to study the micro-architectural execution characteristics of the privileged domain while performing various VM management operations. Our study shows that today's state-of-the-art processor still has room for further optimizations when executing virtualized cloud workloads, particularly in the organization of last level caches and on-chip cache coherence protocol. Specifically, our analysis shows that: shared caches could be partitioned to eliminate interference between the privileged domain and guest domains;the cache coherence protocol could support a high degree of data sharing of the privileged domain;and cache capacity or CPU utilization occupied by the privileged domain could be effectively managed when performing management workflows to achieve high system throughput. © 2013 IEEE.

关键词： Virtualization

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A framework for automatic custom instruction identification on multi-issue ASIPs

A framework for automatic custom instruction identification ...

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IEEE International Conference on Industrial Informatics (INDIN)

作者： Alexandre S. Nery Nadia Nedjah Felipe M. G. França Lech Jozwiak Henk Corporaal LAM - Computer Architecture and Microelectronics Laboratory COPPE Universidade Federal do Rio de Janeiro Brazil Department of Electrical Engineering - Electronic Systems Eindhoven University of Technology The Netherlands Universidade do Estado do Rio de Janeiro Rio de Janeiro RJ BR

Custom Instruction Identification is an important part in the design of efficient Application-Specific Processors (ASIPs). It consists of profiling of a given application to find patterns of basic operations that are frequently executed. Operations of such patterns can be implemented together as a single custom instruction to speedup the execution of the application. Because of the problem's high complexity, several methods have been proposed for specific single-issue (RISC) processors and architectures, limiting the shape and size of custom instructions that can actually be identified and, possibly, implemented. In this paper, we propose and discuss an efficient custom instruction set identification method and corresponding automatic tool for multi-issue VLIW ASIPs, which search for the common operation patterns of the most frequently executed basic blocks of a given application, with different sizes and shapes. The speedup results for the custom instructions identified by our tool are provided for a set of benchmark applications. The speedup is up to 68%, with only a few custom instructions used.

关键词： VLIW Program processors Libraries Registers Ray tracing Hardware Shape

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Improving Cyber Resiliency of Cloud Application Services by Applying Software Behavior Encryption (SBE)

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Procedia computer Science 2014年 28卷 62-70页

作者： Danny Thebeau II Benjamin Reidy Ricardo Valerdi Avinash Gudagi Hemayamini Kurra Youssif Al-Nashif Salim Hariri Frederick Sheldon University of Arizona Department of Systems and Industrial Engineering 1127 E. James E. Rogers Way Tucson AZ 85721-0012 USA University of Arizona Electrical and Computer Engineering 1230 E. Speedway Blvd PO Box 210104 Tucson AZ 85721-0104 USA Oak Ridge National Laboratory Applied Software Engineering Research PO Box 2008 Oak Ridge TN 37831 USA

The objective of this work is to define and measure cyber resiliency of the “cloud” in a Moving Target Defense (MTD) environment that applies the Software Behavior Encryption (SBE) method. Implementation of SBE has shown to increase vulnerability tolerance in a particular software system by introducing software diversity and redundant version shuffling to obfuscate the system to attackers. With this in mind, this paper nominates attack surface, confidentiality, integrity, availability, and survivability as the critical components of cyber resiliency, and a notional example is provided to demonstrate the components application and aggregation.

关键词： Moving Target Defense (MTD) Software Behavior Encryption (SBE) Storage Dynamic Encryption (SDE) Resiliency Attack Surface Survivability Availability Integrity Confidentiality

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Motion deblurring using super-sparsity

Motion deblurring using super-sparsity

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20th International Conference on Neural Information Processing, ICONIP 2013

作者： Zhao, Jingxiong Zhao, Haohua Zhang, Keting Zhang, Liqing MOE-Microsoft Key Laboratory for Intelligent Computing and Intelligent Systems Department of Computer Science and Engineering Shanghai Jiao Tong University China

ISBN: (纸本)9783642420504

Motion blur is caused by the camera shake during the exposure in which the blur kernel describes the trace of shaking. Based on this generating process of the kernel , we observed that the distribution of the kernel obeys super-sparsity, as the natural images. Recent works mostly exploit various kinds of priors in their models, but focus on the the speed or a close-form formulation for convenience of mathematical calculation ignoring the intrinsic feature of the kernels and images. In this paper we propose a new model with super-sparse prior for the deblurring problem from one single image. Since the close-form formulation of this model doesn't exist, we use a look-up table trick to approximate the solution. Qualitative and quantitative evaluation demonstrate that our model with super-sparse prior can produce stable and high-quality results. © Springer-Verlag 2013.

关键词： Convolution

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Modulation scheme of the differential-mode uk inverter for loss mitigation

Modulation scheme of the differential-mode uk inverter for l...

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5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013

作者： Mehrnami, Siamak Mazumder, Sudip K. Laboratory for Energy and Switching-Electronics Systems Department of Electrical and Computer Engineering University of Illinois at Chicago Chicago United States

ISBN: (纸本)9781479903351

Among the various isolated inverter topologies for grid connection of the renewable energies, the differentialmode uk inverter has several outstanding features. It has lower number of devices, which are low-side driven. It has lower high-frequency ripple on the both ac and dc sides. This paper introduces a new modulation technique intended to eliminate the power circulation by manipulating just one module at a time which leads to a better efficiency. © 2013 IEEE.

关键词： Electric inverters

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Quantum Nondemolition Detection of a Propagating Microwave Photon

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Physical Review Letters 2014年第9期112卷 093601-093601页

作者： Sankar R. Sathyamoorthy L. Tornberg Anton F. Kockum Ben Q. Baragiola Joshua Combes C. M. Wilson Thomas M. Stace G. Johansson Department of Microtechnology and Nanoscience MC2 Chalmers University of Technology S-41296 Gothenburg Sweden Center for Quantum Information and Control University of New Mexico Albuquerque New Mexico 87131-0001 USA Institute for Quantum Computing and Electrical and Computer Engineering Department University of Waterloo Waterloo N2 L 3G1 Canada Centre for Engineered Quantum Systems School of Physical Sciences University of Queensland Saint Lucia Queensland 4072 Australia

The ability to nondestructively detect the presence of a single, traveling photon has been a long-standing goal in optics, with applications in quantum information and measurement. Realizing such a detector is complicated by the fact that photon-photon interactions are typically very weak. At microwave frequencies, very strong effective photon-photon interactions in a waveguide have recently been demonstrated. Here we show how this type of interaction can be used to realize a quantum nondemolition measurement of a single propagating microwave photon. The scheme we propose uses a chain of solid-state three-level systems (transmons) cascaded through circulators which suppress photon backscattering. Our theoretical analysis shows that microwave-photon detection with fidelity around 90% can be realized with existing technologies.

关键词： MICROWAVE photonics RESEARCH QUANTUM mechanics QUANTUM information science PHOTON-photon interactions WAVEGUIDES PHOTON scattering BACKSCATTERING

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Predicting the Speed of a Wave Glider Autonomous Surface Vehicle from Wave Model Data

Predicting the Speed of a Wave Glider Autonomous Surface Veh...

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IEEE/RSJ International Conference on Intelligent Robots and systems

作者： Phillip Ngo Jnaneshwar Das Jonathan Ogle Jesse Thomas Will Anderson Ryan N. Smith School of Electrical Engineering and Computer Science Queensland University of Technology Brisbane QLD 4001 Australia Robotic Embedded Systems Laboratory University of Southern California Los Angeles CA USA Physics and Engineering Department Fort Lewis College Durango CO USA Liquid Robotics Inc. Sunnyvale CA USA

ISBN: (纸本)9781479969357

A key component of robotic path planning for monitoring dynamic events is reliable navigation to the right place at the right time. For persistent monitoring applications (e.g., over months), marine robots are beginning to make use of the environment for propulsion, instead of depending on traditional motors and propellers. These vehicles are able to realize dramatically higher endurance by exploiting wave and wind energy, however the path planning problem becomes difficult as the vehicle speed is no longer directly controllable. In this paper, we examine Gaussian process models to predict the speed of the Wave Glider autonomous surface vehicle from observable environmental parameters. Using training data from an on-board sensor, and wave parameter forecasts from the WAVEWATCH III model, our probabilistic regression models create an effective method for predicting Wave Glider speed for use in a variety of path planning applications.

关键词： Ground vehicles Path planning Vehicle speed speed Crucial components A wave

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Notched ultra-wideband filter based on stepped-impedance T-shaped resonator in low temperature cofired ceramic

Notched ultra-wideband filter based on stepped-impedance T-s...

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IEEE International Wireless Symposium (IWS)

作者： Chun-Xia Zhou Yong-Xin Guo Lin-Sheng Wu Wen Wu Qian Xiao Ministerial Key Laboratory of JGMT Nanjing University of Science and Technology Nanjing China Department of Electrical and Computer Engineering National University of Singapore Singapore Key Lab of Ministry of Education for Research of Design and EMC of High-Speed Electronic Systems Shanghai Jiao Tong University Shanghai China

A compact ultra-wideband (UWB) bandpass filter with an inherent notched band and steep slopes has been presented and implemented with the low temperature cofired ceramic technology. The filter is realized by a stepped-impedance T-shaped resonator (SITR) coupled to a pair of quarter-wavelength input/output feed-lines. The proposed SITR can facilitate not only a notched band, but also sharp roll-off characteristics. Measured results agree well with the HFSS simulated results. The whole size of the UWB filter is only 6.0×6.0×1.92 mm 3 .

关键词： Band-pass filters Resonator filters Filtering theory Resonant frequency Ultra wideband technology Wireless communication Metals

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