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Adiabatic topological quantum computing

Physical Review A 2015年第1期92卷 012336-012336页

作者： Chris Cesare Andrew J. Landahl Dave Bacon Steven T. Flammia Alice Neels Center for Quantum Information and Control University of New Mexico Albuquerque New Mexico 87131 USA Department of Physics and Astronomy University of New Mexico Albuquerque New Mexico 87131 USA Advanced Device Technologies Sandia National Laboratories Albuquerque New Mexico 87185 USA Department of Computer Science and Engineering University of Washington Seattle Washington 98195 USA Department of Physics University of Washington Seattle Washington 98195 USA Centre for Engineered Quantum Systems School of Physics The University of Sydney Sydney NSW 2006 Australia

Topological quantum computing promises error-resistant quantum computation without active error correction. However, there is a worry that during the process of executing quantum gates by braiding anyons around each other, extra anyonic excitations will be created that will disorder the encoded quantum information. Here, we explore this question in detail by studying adiabatic code deformations on Hamiltonians based on topological codes, notably Kitaev's surface codes and the more recently discovered color codes. We develop protocols that enable universal quantum computing by adiabatic evolution in a way that keeps the energy gap of the system constant with respect to the computation size and introduces only simple local Hamiltonian interactions. This allows one to perform holonomic quantum computing with these topological quantum computing systems. The tools we develop allow one to go beyond numerical simulations and understand these processes analytically.

关键词： QUANTUM computing ANYONS TOPOLOGY ERROR correction (Information theory) HAMILTONIAN systems

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Simulations of the hazard detection system for approach trajectories of the Morpheus lunar lander

Simulations of the hazard detection system for approach traj...

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AIAA Guidance, Navigation, and control Conference 2015, MGNC 2015 - Held at the AIAA SciTech Forum 2015

作者： Luna, Michael E. Huertas, Andres Trawny, Nikolas Villalpando, Carlos Y. Martin, Keith E. Wilson, William Restrepo, Carolina I. Guidance & Control Section Jet Propulsion Laboratory California Institute of Technology Mail Stop 198-235 PasadenaCA91109 United States Mobility & Robotics Systems Section Jet Propulsion Laboratory California Institute of Technology Mail Stop 198-235 PasadenaCA91109 United States GN&C Hardware & Testbed Development Jet Propulsion Laboratory California Institute of Technology Mail Stop 198-235 PasadenaCA91109 United States Advanced Computer Systems & Technologies Jet Propulsion Laboratory California Institute of Technology Mail Stop 198-138 PasadenaCA91109 United States Simulation & Support Equipment Jet Propulsion Laboratory California Institute of Technology PasadenaCA91109 United States GN&C Hardware & Testbed Development Jet Propulsion Laboratory California Institute of Technology Mail Stop 198-235 PasadenaCA91109 United States Integrated GN&C Analysis Branch NASA Johnson Space Center HoustonTX77058 United States

ISBN: (纸本)9781510801097

The Hazard Detection System is part of a suite of sensors and algorithms designed to autonomously land a vehicle on unknown terrain while avoiding any hazards. This paper describes the simulations built to predict the performance of the Hazard Detection System to support flight testing onboard the Morpheus Lander testbed at the Kennedy Space Center. The paper describes a hardware-in-the-loop simulation that was used to predict system performance under nominal operating conditions, and also a Monte Carlo simulation to predict command timing performance bounds under a wide range of varying conditions. © 2015, E-flow American Institute of Aeronautics and Astronautics (AIAA). All rights reserved.

关键词： Monte Carlo methods

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Space QUEST mission proposal: Experimentally testing decoherence due to gravity

arXiv

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arXiv 2017年

作者： Joshi, Siddarth Koduru Pienaar, Jacques Ralph, Timothy C. Cacciapuoti, Luigi McCutcheon, Will Rarity, John Giggenbach, Dirk Lim, Jin Gyu Makarov, Vadim Fuentes, Ivette Scheidl, Thomas Beckert, Erik Bourennane, Mohamed Bruschi, David Edward Cabello, Adan Capmany, Jose Carrasco-Casado, Alberto Diamanti, Eleni Dusek, Miloslav Elser, Dominique Gulinatti, Angelo Hadfield, Robert H. Jennewein, Thomas Kaltenbaek, Rainer Krainak, Michael A. Lo, Hoi-Kwong Marquardt, Christoph Milburn, Gerard Peev, Momtchil Poppe, Andreas Pruneri, Valerio Renner, Renato Salomon, Christophe Skaar, Johannes Solomos, Nikolaos Stipčević, Mario Torres, Juan P. Toyoshima, Morio Villoresi, Paolo Walmsley, Ian Weihs, Gregor Weinfurter, Harald Zeilinger, Anton Zukowski, Marek Ursin, Rupert Institute for Quantum Optics and Quantum Information Austrian Academy of Sciences Boltzmanngasse 3 ViennaA-1090 Austria Centre for Quantum Computation & Communication Technology Department of Physics University of Queensland St LuciaQLD4072 Australia European Space Agency Keplerlaan 1 - P.O. Box 299 AG Noordwijk ZH2200 Netherlands Department of Electrical and Electronic Engineering University of Bristol Merchant Venturers Building Woodland Road BristolBS8 1UB United Kingdom German Aerospace Center Institute of Communications and Navigation Muenchner Strasse 20 Wessling82234 Germany Institute for Quantum Computing Department of Electrical and Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada Institute for Quantum Computing Department of Physics and Astronomy University of Waterloo WaterlooONN2L 3G1 Canada Precision Engineering Department Fraunhofer IOF Albert-Einstein-Straße 7 Jena07745 Germany Physics department Stockholm University Albanova universitetscentrum Universitetsvägen 10 Stockholm114 18 Sweden York Centre for Quantum Technologies Department of Physics University of York HeslingtonYO10 5DD United Kingdom University of Seville SevillaE-41012 Spain iTEAM Research Institute Universitat Politcnica de Valencia Valencia46022 Spain 4-2-1 Nukui-Kitamachi Koganei Tokyo184-8795 Japan CNRS Universite Pierre et Marie Curie Paris75005 France Department of Optics Faculty of Science Palacky University 17. Iistopadu 12 Olomouc772 00 Czech Republic Max Planck Institute for the Science of Light Bldg. 24 Günther-Scharowsky Str. 1 ErlangenD-91058 Germany Piazza Leonardo da Vinci 32 Milano20133 Italy School of Engineering University of Glasgow GlasgowG12 8LT United Kingdom Vienna Center of Quantum Science and Technology Faculty of Physics University of Vienna Boltzmanngasse 5 ViennaA-1090 Austria NASA Goddard Space Flight Center GreenbeltMD20771 United States Center for Quantum Information and Quantum Con

Models of quantum systems on curved space-times lack sufficient experimental verification. Some speculative theories suggest that quantum properties, such as entanglement, may exhibit entirely different behavior to purely classical systems. By measuring this effect or lack thereof, we can test the hypotheses behind several such models. For instance, as predicted by Ralph and coworkers [T C Ralph, G J Milburn, and T Downes, Phys. Rev. A, 79(2):22121, 2009;T C Ralph and J Pienaar, New Journal of Physics, 16(8):85008, 2014], a bipartite entangled system could decohere if each particle traversed through a different gravitational field gradient. We propose to study this effect in a ground to space uplink scenario. We extend the above theoretical predictions of Ralph and coworkers and discuss the scientific consequences of detecting/failing to detect the predicted gravitational decoherence. We present a detailed mission design of the European Space Agency's (ESA) Space QUEST (Space - Quantum Entanglement Space Test) mission, and study the feasibility of the mission scheme. Copyright © 2017, The Authors. All rights reserved.

关键词： Quantum entanglement

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Adaptive cubature strong tracking information filter using variational Bayesian method 19

Adaptive cubature strong tracking information filter using v...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Ge, Quanbo Wen, Chenglin Chen, Shaodong Sun, Ruoyu Li, Yuan Institute of Systems Science and Control Engineering School of Automation Hangzhou Dianzi University Hangzhou Zhejiang310018 China Luoyang Institute of Electro Optical Equipment of AVIC Luoyang Henan471000 China Department of Electrical and Computer Engineering University of Minnesota MinneapolisMN55414 United States Information Engineering School Shenyang University of Chemical Technology Shenyang Liaoning100142 China

ISBN: (纸本)9783902823625

For most practical nonlinear state estimation problems, the conventional nonlinear filters do not usually work well for some cases, such as inaccurate system model, sudden change of state-interested and unknown variance of measurement noise. In this paper, an adaptive cubature strong tracking information filter using variational Bayesian (VB) method is proposed to cope with these complex cases. Firstly, the strong tracking filtering (STF) technology is used to integrally improve performance of cubature information filter (CIF) aiming at the first two cases and an iterative scheme is presented to effectively evaluate a strong tracking fading factor. Secondly, the VB method is introduced to iteratively evaluate the unknown variance of measurement noise. Finally, the novel adaptive cubature information filter is obtained by perfectly combining the STF technology with the VB method, where the variance estimation provided by the VB method guarantees normal running of the strong tracking functionality. © IFAC.

关键词： Information filtering

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H∞ filtering of polynomial fuzzy systems with fading measurements

H∞ filtering of polynomial fuzzy systems with fading measur...

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Chinese control Conference (CCC)

作者： Yong Jiang Yan Zhao Shandong Petroleum Equipment Engineering and Technology Research Center Shengli Oilfield Highland Petroleum Equipment Co. Ltd Dongying China Advanced Control Systems Laboratory School of Electronics and Information Engineering Beijing Jiaotong University Beijing Beijing CN

This paper investigates the distributed H ∞ filtering problem of the polynomial fuzzy system with fading measurements. A fading channel is assumed to be existing between the plant and the filter, and the Rice channel model is dedicated to describe the imperfect communication link. The attention is to design a fuzzy H ∞ filter such that the filter error system is stochastically stable guaranteeing the prescribed H ∞ performance. Sufficient conditions of the filter are derived in terms of sum of square inequalities, which can be solved by the recently developed SOSTOOLS.

关键词： Polynomials Fuzzy systems Fading control systems Radio frequency Channel models Stability analysis

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Athermal scheme based on resonance splitting for silicon-on-insulator microring resonators

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Photonics Research 2014年第2期2卷 71-74页

作者： Qingzhong Deng Xinbai Li Zhiping Zhou Huaxiang Yi State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China Xi’an Flight Automatic Control Research Institute Aviation Industries of China(AVIC)Xi’an 710065China

A novel athermal scheme utilizing resonance splitting of a dual-ring structure is *** design and simulation are presented,and a proof of concept structure is optimized to demonstrate an athermal resonator with resonan... 详细信息

关键词： splitting scheme resonance

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A MATHEMATICAL APPROACH TO DESYNCHRONIZATION OF COUPLED OSCILLATORS： APPLICATION TO A NEURONAL ENSEMBLE

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International Journal of Biomathematics 2013年第2期6卷 173-189页

作者： GHAZAL MONTASERI ARAS ADHAMI-MIRHOSSEINI MOHAMMAD JAVAD YAZDANPANAH Advanced Control Systems Laboratory School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iran Advanced Control Systems LaboratoryControl and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iran

Synchronization of neurons plays an important role in vision, movement and memory. However, many neurological disorders such as epilepsies, Parkinson disease and essen- tial tremor are related to excessive synchronization of neurons. In the line of therapy, stimulations to these pathologically synchronized neurons should be capable of breaking synchrony. As the first step of designing an effective stimulation, we consider desynchro- nization problem of coupled limit-cycle oscillators ensemble. First, the desynchronization problem is redefined in a nonlinear output regulation framework. Then, we design an output regulator （stimulation） which forces limit-cycle oscillators to track exogenous sinusoidal references with different phases. The proposed stimulation is robust against variations of oscillators＇ frequencies. Mathematical analysis and simulation results reveal the efficiency of the proposed technique.

关键词： Limit-cycle oscillators nonlinear output regulation synchrony suppression robust stimulation.

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Fast and Precise Positioning of Wheeled Omni-directional Robot With Input Delay Using Model-based Predictive control

Fast and Precise Positioning of Wheeled Omni-directional Rob...

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第三十三届中国控制会议

作者： Mahdi Zarghami Ahmad Fakharian Amin Ganjali Poudeh Aras Adhami-Mirhosseini Faculty of Electrical Biomedical and Mechatronics EngineeringMechatronics Research Laboratory (MRL)Qazvin BranchIslamic Azad University Advanced Control Systems Lab. School of Electrical and Computer EngineeringCollege of EngineeringUniversity of Tehran

ISBN: (纸本)9781479947249

In dynamic environments, Omni-directional mobile robots sometimes are required to accomplish accurate and stable tracking of trajectories, but rare researches are addressed in the literature, which specifically deal with time-delay *** order to cope with such situation, the trajectory tracking of an Omni-directional mobile robot is handled by model predictive control in presence of input-delay. The main innovation of this work is that MPC controller is employed to the end of ***, a significant reduction is yielded in the time of robot motion. This strategy forces that MPC method uses nearly good model approximation in which, the model deficiency can be compensated by modifying the novel kinematic model for ***, in this study, the proposed controller is compared with PID controller that achieve about 40% enhancement in amount of time to reach target and also results in to the more precise robot control in target point error.

关键词： input delay Omni-directional mobile robots predictive control motion control

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Model-based Predictive control of Wheeled Omni-directional Robots Considering Nonlinear Dynamical Constraints and Input Delay

Model-based Predictive Control of Wheeled Omni-directional R...

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International Conference on control, Automation, Robotics & Vision

作者： Mahdi Zarghami Ahmad Fakharian Amin Ganjali Poudeh Aras Adhami-Mirhosseini Mechatronics Research Laboratory (MRL) Faculty of Electrical Biomedical and Mechatronics Engineering Qazvin Branch Islamic Azad University Qazvin Iran Advanced Control Systems Lab. School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iran

ISBN: (纸本)9781479952007

The main enthusiasm of the use of MPC in this study relies on its ability in including state and control constraints that naturally comes up in practical problems. At the same time, nonlinearity of constraints compels the numerical solution of optimization problem. Therefore, a number of intelligent algorithms to overcome nonlinear optimization of the cost function is reviewed, however, their time consuming computations are considered as a dominant limitation. Meantime, due to its remarkable advantages, the motion control of Omni-directional mobile robot is handled by design of NMPC scheme. Furthermore, a novel kinematic model for the application of mobile robot is represented. As a demonstration for the proposed model, simulation results show that settling time is reduced 22% in comparison with ideal kinematic model and also the performance of the suggested control strategy shows its effectiveness in presence of disturbance and noise in all environments.

关键词： Robot kinematics Optimization Mobile robots Mathematical model Kinematics Trajectory

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Adaptive Cubature Strong Tracking Information Filter Using Variational Bayesian Method

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IFAC Proceedings Volumes 2014年第3期47卷 5945-5950页

作者： Quanbo Ge Chenglin Wen Shaodong Chen Ruoyu Sun Yuan Li Institute of Systems Science and Control Engineering School of Automation Hangzhou Dianzi University Hangzhou Zhejiang 310018 China Luoyang Institute of Electro Optical Equipment of AVIC Luoyang Henan 471000 China Department of Electrical and Computer Engineering University of Minnesota Minneapolis Minnesota 55414 USA Information Engineering School Shenyang University of Chemical Technology Shenyang Liaoning 100142 China

关键词： Nonlinear system unknown variance of measurement noise cubature information filter strong tracking filtering variational Bayesian

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