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Tomography is Necessary for Universal Entanglement Detection with Single-Copy Observables

Physical Review Letters 2016年第23期116卷 230501-230501页

作者： Dawei Lu Tao Xin Nengkun Yu Zhengfeng Ji Jianxin Chen Guilu Long Jonathan Baugh Xinhua Peng Bei Zeng Raymond Laflamme Institute for Quantum Computing University of Waterloo Waterloo N2L 3G1 Ontario Canada State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics Tsinghua University Beijing 100084 China Centre for Quantum Computation and Intelligent Systems Faculty of Engineering and Information Technology University of Technology Sydney NSW 2007 Australia Department of Mathematics and Statistics University of Guelph Guelph Ontario N1G 2W1 Canada State Key Laboratory of Computer Science Institute of Software Chinese Academy of Sciences Beijing 100190 China Joint Center for Quantum Information and Computer Science University of Maryland College Park Maryland 20742 USA Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics University of Science and Technology of China Hefei Anhui 230036 China Canadian Institute for Advanced Research Toronto Ontario M5G 1Z8 Canada Perimeter Institute for Theoretical Physics Waterloo Ontario N2L 2Y5 Canada

Entanglement, one of the central mysteries of quantum mechanics, plays an essential role in numerous tasks of quantum information science. A natural question of both theoretical and experimental importance is whether universal entanglement detection can be accomplished without full state tomography. In this Letter, we prove a no-go theorem that rules out this possibility for nonadaptive schemes that employ single-copy measurements only. We also examine a previously implemented experiment [H. Park et al., Phys. Rev. Lett. 105, 230404 (2010)], which claimed to detect entanglement of two-qubit states via adaptive single-copy measurements without full state tomography. In contrast, our simulation and experiment both support the opposite conclusion that the protocol, indeed, leads to full state tomography, which supplements our no-go theorem. These results reveal a fundamental limit of single-copy measurements in entanglement detection and provide a general framework of the detection of other interesting properties of quantum states, such as the positivity of partial transpose and the k-symmetric extendibility.

关键词： Entanglement detection Entanglement measures Quantum tomography Nuclear magnetic resonance

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Distributed t-way test suite execution with code coverage on multiple machines

Distributed t-way test suite execution with code coverage on...

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2014 IEEE Symposium on Industrial Electronics and Applications, ISIEA 2014

作者： Soh, Zainal Hisham Che Abdullah, Syahrul Afzal Che Zamli, Kamal Zuhairi Faculty of Electrical Engineering Universiti Teknologi MARA Penang Malaysia Faculty of Electrical Engineering Universiti Teknologi MARA Malaysia Shah Alam Malaysia Faculty of Computer Systems and Software Engineering Universiti Malaysia Pahang Pahang Malaysia

ISBN: (纸本)9781479955909

This paper present a distributed test suite execution in term of code coverage analysis for testing a t-way test suite data using tuple space technology with Map and Reduce mechanism. The generated t-way test suite data and software under test (SUT) source code are preloaded into their respective partition using hash based routing algorithm. Each partition parsed each test case within the test suite into actual test data file. The code coverage of SUT source code is tested with each test case in actual test data and produces a test coverage result at their respective partition in term of class, method, block and line coverage. A case study of CGPA calculator as SUT is done to measure the test suite execution performance in term of test coverage with varying interaction strength on single and multiple machine environments. The scalability analysis of distributed test suite execution is also done in term of speedup gained while running on a multiple machine environments. An encouraging result is obtained on test coverage and speedup for multiple machine environments as compared to single machine environment. Higher test coverage and more speedup is obtained in higher machine environments. © 2014 IEEE.

关键词： Testing

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A study in data security in cloud computing 1

A study in data security in cloud computing

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1st International Conference on computer, Communications, and Control Technology, I4CT 2014

作者： Jaber, Aws Naser Abdul Majid, Mazlina Binti Zolkipli, Mohamad Fadli Bin Khan, Nusrat Ullah Faculty of Computer Systems and Software Engineering Universiti Malaysia Pahang Lebuhraya Tun Razak Gambang Kuantan Pahang Darul Makmur26300 Malaysia

ISBN: (纸本)9781479945559

The vision of 21st century computing is that users can access Internet services over lightweight portable devices rather than via variants of the traditional desktop computer. Consequently, users will have no interest in large, powerful machines. How, then, will computing power be provided? The answer to this question lies in cloud computing. Cloud computing is a recent trend in IT in which computing power and knowledge are moved away from the desktop and desktop PCs into giant datacenters. In the cloud computing paradigm, applications are delivered as services over the Internet. The key driving forces behind cloud computing are the presence of broadband and wireless networking, falling storage prices, and progressive enhancements in Internet computing software packages. Cloud service shoppers can add additional capabilities at peak demand, reduce prices, experiment with new services, and remove unessential capabilities. Service suppliers can increase utilization via multiplexing and allow for larger investments in software packages and hardware. © 2014 IEEE.

关键词： Availability

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A review of reversible medical image watermarking scheme with tamper localization and recovery capability 1

A review of reversible medical image watermarking scheme wit...

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1st International Conference on computer, Communications, and Control Technology, I4CT 2014

作者： Hui Liang, Khor Liew, Siau-Chuin Zain, Jasni Mohd. Faculty of Computer Systems and Software Engineering University Malaysia Pahang Lebuhraya Tun Razak Gambang Kuantan Pahang Darul Makmur26300 Malaysia

ISBN: (纸本)9781479945559

With the advancement of technology in communication network, it facilitated digital medical images transmitted to healthcare professional via internal network or public network (e.g. Internet). Consequently, digital medical image security has become an important issue when images and their pertinent patient information are exposed to the threats, such as tampering of images to include false data which may lead to wrong diagnosis and treatment. Medical image distortion is not to be tolerated for diagnosis purposes, thus a reversible watermarking is introduced. This paper reviews the works that have done on the reversible watermarking scheme with tamper localization and recovery capability. © 2014 IEEE.

关键词： Recovery

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Neural network based switch beam smart antenna

Neural network based switch beam smart antenna

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2014 International Conference on IEEE Asia Pacific Conference on Wireless and Mobile, APWiMob 2014

作者： Orakwue, Stella I. Ngah, Razali Rahman, T.A. Mohd Hashim, Siti Zaiton Skudai Johor81310 Malaysia Department of Software Engineering Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia Skudai81310 Malaysia

ISBN: (纸本)9781479937110

A neural network based switched beam smart antenna has been proposed. A feed-forward back propagation artificial neural network (FFBPANN) was applied in antenna beam switching. The network takes samples of the calibration of the footprint of the base station, in terms of azimuth and elevation angle, and maps it to the radiation pattern of different base station antenna arrays covering the area. It was treated as a classification problem. The developed methodology was tested for a 4×4 Butler matrix and the result obtained shows an improvement in the performance of beam switching. The developed network can be used to switch different antennas of the base stations depending on the position of the target. © 2014 IEEE.

关键词： Butler matrix

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A study in data security in cloud computing

A study in data security in cloud computing

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International Conference on computer, Communications, and Control Technology (I4CT)

作者： Aws Naser Jaber Mazlina Binti Abdul Majid Mohamad Fadli Bin Zolkipli Nusrat Ullah Khan Faculty of Computer Systems and Software Engineering Universiti Malaysia Pahang Kuantan Faculty of Computer Systems and Software Engineering Universiti Malaysia Pahang Kuantan Pahang MY

The vision of 21 st century computing is that users can access Internet services over lightweight portable devices rather than via variants of the traditional desktop computer. Consequently, users will have no interest in large, powerful machines. How, then, will computing power be provided? The answer to this question lies in cloud computing. Cloud computing is a recent trend in IT in which computing power and knowledge are moved away from the desktop and desktop PCs into giant datacenters. In the cloud computing paradigm, applications are delivered as services over the Internet. The key driving forces behind cloud computing are the presence of broadband and wireless networking, falling storage prices, and progressive enhancements in Internet computing software packages. Cloud service shoppers can add additional capabilities at peak demand, reduce prices, experiment with new services, and remove unessential capabilities. Service suppliers can increase utilization via multiplexing and allow for larger investments in software packages and hardware.

关键词： Cloud computing Encryption Google Availability computers Companies

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Boosting Learning Experience through Virtual Reality

Boosting Learning Experience through Virtual Reality

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2014第三届国际新兴信息及通讯技术产业大会

作者： Jasni Binti Mohamad Zain Faculty of Computer Systems & Software Engineering University Malaysia Pahang

It is vital that our curriculum motivates and inspires the scientists of the future. With careful planning and a measure of rigor, integrated learning can be particularly motivating. Bringing subjects together to address a problem that students see as 'real' can excite them. Virtual Reality(VR) offers teachers and students unique experiences that are consistent with successful instructional strategies: handson learning, group projects and discussions, field trips, simulations, and concept visualization. Within the limits of system functionality, we can create anything imaginable and then become part of *** VR learning environment is experiential and intuitive;it is a shared information context that offers unique interactivity and can be configured for individual learning and performance *** Universiti Malaysia Pahang, we use EON Creator to embed VR in primary school education to increase the understanding of science concept.

关键词： Virtual Boosting Learning Experience through Virtual Reality

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Effect of Using Different Propagations on Performance of OLSR and DSDV Routing Protocols

Effect of Using Different Propagations on Performance of OLS...

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International Conference on Intelligent systems, Modelling and Simulation

作者： Norrozila Sulaiman Ghaidaa M. Abdulsahib Osamah I. Khalaf Muamer N. Mohammed Faculty of Computer Systems & Software Engineering University Malaysia Pahang

ISBN: (纸本)9781479938599

The performance of Ad hoc routing protocol always has been measured by using free-space model and Two-ray ground model. But these two models are very simple and can't represent real world propagation, because they ignored the effect of obstacles in their environment representation. So the most real models is shadowing propagation model which has taken all these factors in account. This paper explains the effect of using two types of propagation models which are: Two Ray Ground model and shadowing model for two important protocols such as Destination Sequenced Distance Vector (DSDV) and Optimized Link Status Routing (OLSR), which are considered a proactive and Table Driven routing protocols and then different performance metrics has been measured. The simulations results have shown that the type of the propagation model has great impact on routing protocol, and it has effected severely on its performance.

关键词： Mobile Ad-hoc Network Two Ray Ground Shadowing Model Routing Protocols Metrics Analysis DSDV simulation and OLSR Simulation

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Comparative performance analysis of bat algorithm and bacterial foraging optimization algorithm using standard benchmark functions

Comparative performance analysis of bat algorithm and bacter...

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Malaysian Conference in software engineering (MySEC)

作者： Yazan A. Alsariera Hammoudeh S. Alamri Abdullah M. Nasser Mazlina A. Majid Kamal Z. Zamli Faculty of Computer Systems and Software Engineering UMP Kuantan Pahang Malaysia

Optimization problem relates to finding the best solution from all feasible solutions. Over the last 30 years, many meta-heuristic algorithms have been developed in the literature including that of Simulated Annealing (SA), Genetic Algorithm (GA), Ant Colony Optimization (ACO), Particle Swarm Optimization (PSO), Harmony Search Algorithm (HS) to name a few. In order to help engineers make a sound decision on the selection amongst the best meta-heuristic algorithms for the problem at hand, there is a need to assess the performance of each algorithm against common case studies. Owing to the fact that they are new and much of their relative performance are still unknown (as compared to other established meta-heuristic algorithms), Bacterial Foraging Optimization Algorithm (BFO) and Bat Algorithm (BA) have been adopted for comparison using the 12 selected benchmark functions. In order to ensure fair comparison, both BFO and BA are implemented using the same data structure and the same language and running in the same platform (i.e. Microsoft Visual C# with .Net Framework 4.5). We found that BFO gives more accurate solution as compared to BA (with the same number of iterations). However, BA exhibits faster convergence rate.

关键词： Microorganisms Optimization Barium Sociology Statistics Benchmark testing Heuristic algorithms

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An experimental design to compare software requirements prioritization techniques

An experimental design to compare software requirements prio...

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International Conference on Computational Science and Technology (ICCST)

作者： Balsam A. Mustafa Azlina Zainuddin Faculty of Computer Systems and Software Engineering University Malaysia Pahang Malaysia

software products are getting increasingly complex described by a large number of requirements that characterize the user needs. In most cases, not all requirements can usually be met with available time and resource constraints; therefore, taking correct decisions about which requirements to implement in a release is crucial as the wrong decision from requirements engineers results in implementation of the false requirements, which lead to failure of project or product in the market. Although much research is done on requirements prioritization techniques, but studies in the area pointed out that when investigating the research made within the area, there seems to be little evidence regarding which approach is better than others and in what situations and environments. This paper presents an initial design of a controlled experiment to compare three prioritization methods. The goal of this experiment is to investigate which technique is better in terms of time consumption, accuracy, and ease of use. The experiment will be conducted in an academic context in Malaysian university.

关键词： software software engineering Educational institutions Accuracy Planning Analytic hierarchy process

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