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Implementing Classical Hadamard Transform Algorithm by Continuous Variable Cluster State 认领 引用 被引量：1
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作者 王宇 苏琦 《Chinese Physics Letters》 SCIE EI CAS CSCD 2017年第7期19-23,共5页
Measurement-based one-way quantum computation, which uses cluster states as resources, provides an efficient model to perforrn computation. However, few of the continuous variable （CV） quantum algorithms and classic... Measurement-based one-way quantum computation, which uses cluster states as resources, provides an efficient model to perforrn computation. However, few of the continuous variable （CV） quantum algorithms and classical algorithms based on one-way quantum computation were proposed. In this work, we propose a method to implement the classical Hadamard transform algorithm utilizing the CV cluster state. Compared with classical computation, only half operations are required when it is operated in the one-way CV quantum computer. As an example, we present a concrete scheme of four-mode classical Hadamard transform algorithm with a four-partite CV cluster state. This method connects the quantum computer and the classical algorithms, which shows the feasibility of running classical algorithms in a quantum computer efficiently. 展开更多
关键词 Implementing Classical Hadamard Transform Algorithm by Continuous Variable Cluster State
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Research and Implementation of the Practical Texture Synthesis Algorithms 认领 引用
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作者 孙家广 周毅 《Journal of Computer Science & Technology》 SCIE EI 1991年第3期222-229,共8页
How to generate pictures real and esthetic objects is an important subject of computer graphics. The techniques of mapping textures onto the surfaces of an object in the 3D space are efficient ap- proaches for the pur... How to generate pictures real and esthetic objects is an important subject of computer graphics. The techniques of mapping textures onto the surfaces of an object in the 3D space are efficient ap- proaches for the purpose.We developed and implemented algorithms for generating objects with appear ances stone,wood grain,ice lattice,brick,doors and windows on Apollo workstations. All the algorithms have been incorporated into the 3D geometry modelling system(GEMS)developed by the CAD Center of Tsinghua University.This paper emphasizes the wood grain and the ice lattice algorithms. 展开更多
关键词 Co Research and Implementation of the Practical Texture Synthesis Algorithms
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Cavity control as a new quantum algorithms implementation treatment 认领 引用 被引量：3
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作者 M. AbuGhanem A. H. Homid M. Abdel-Aty 《Frontiers of physics》 SCIE CSCD 2018年第1期187-199,共13页
Based on recent experiments [Nature 449, 438 （2007） and Nature Physics 6, 777 （2010）], a new approach for realizing quantum gates for the design of quantum algorithms was developed. Accordingly, the operation time... Based on recent experiments [Nature 449, 438 （2007） and Nature Physics 6, 777 （2010）], a new approach for realizing quantum gates for the design of quantum algorithms was developed. Accordingly, the operation times of such gates while functioning in algorithm applications depend on the number of photons present in their resonant cavities. Multi-qubit algorithms can be realized in systems in which the photon number is increased slightly over the qubit number. In addition, the time required for operation is considerably less than the dephasing and relaxation times of the systems. The contextual use of the photon number as a main control in the realization of any algorithm was demonstrated. The results indicate the possibility of a full integration into the realization of multi-qubit multiphoton states and its application in algorithm designs. Yhrthermore, this approach will lead to a successful implementation of these designs in future experiments. 展开更多
关键词 quantum computation quantum algorithms implementation cavity control
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Analysis and implementation of theFMLMS algorithm in AANC 认领 引用
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作者 LI Haiying CHEN Kean and SUN Jincai 《Chinese Journal of Acoustics》 1997年第4期364-371,共8页
Although the Filtered-X LMS (FLMS) algorithm is widely used in the Adaptive Active Noise Control (AANC) system due to its simplicity, its applications to an AANC are limited because it is intensively sensitive to the ... Although the Filtered-X LMS (FLMS) algorithm is widely used in the Adaptive Active Noise Control (AANC) system due to its simplicity, its applications to an AANC are limited because it is intensively sensitive to the dispersion of the eigenvalues of the autocorrelation matrix of the input signal vector. The Filtered-X Momentum LMS (FMLMS) algorithm proposed in this paper includes a momentum term to weight update equation of the FLMS algorithm. From the theoretical analysis, the computer simulations and the experimental resultsin a half-anechoic room, it is shown that the FMLMS algorithm has more advantages than the FLMS algorithm for a single-path AANC system. 展开更多
关键词 Analysis and implementation of theFMLMS algorithm in AANC
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Commissioning progress of the FAST 认领 引用 被引量：34
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作者 Peng Jiang YouLing Yue +16 位作者 HengQian Gan Rui Yao Hui Li GaoFeng Pan JingHai Sun DongJun Yu HongFei Liu NingYu Tang Lei Qian JiGuang Lu Jun Yan Bo Peng ShuXin Zhang QiMing Wang Qi Li Di Li FAST Collaboration 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2019年第5期3-24,共22页
The Five-hundred-meter Aperture Spherical radio Telescope(FAST)was completed with its main structure installed on September 25,2016,after which it entered the commissioning phase.This paper aims to introduce the commi... The Five-hundred-meter Aperture Spherical radio Telescope(FAST)was completed with its main structure installed on September 25,2016,after which it entered the commissioning phase.This paper aims to introduce the commissioning progress of the FAST over the past two years.To improve its operational reliability and ensure effective observation time,FAST has been equipped with a real-time information system for the active reflector system and hierarchical commissioning scheme for the feed support system,which ultimately achieves safe operation of the two systems.For meeting the high-performance indices,a highprecision measurement system was set up based on the effective control methods that were implemented for the active reflector system and feed support system.Since the commissioning of the FAST,a low-frequency ultra-wideband receiver and 19-beam1.05-1.45 GHz receiver have been mainly used.Telescope efficiency,pointing accuracy,and system noise temperature were completely tested and ultimately achieved the acceptance indices of the telescope.The FAST has been in the process of national acceptance preparations and has begun to search for pulsars.In the future,it will still strive to improve its capabilities and expand its application prospects. 展开更多
关键词 radio telescopes and instrumentation astronomical observations radio wave receivers algorithms and implementation control systems
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EvolveKG:a general framework to learn evolving knowledge graphs 认领 引用
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作者 Jiaqi LIU Zhiwen YU +4 位作者 Bin GUO Cheng DENG Luoyi FU Xinbing WANG Chenghu ZHOU 《Frontiers of Computer Science》 SCIE EI CSCD 2024年第3期43-59,共17页
A great many practical applications have observed knowledge evolution,i.e.,continuous born of new knowledge,with its formation influenced by the structure of historical knowledge.This observation gives rise to evolvin... A great many practical applications have observed knowledge evolution,i.e.,continuous born of new knowledge,with its formation influenced by the structure of historical knowledge.This observation gives rise to evolving knowledge graphs whose structure temporally grows over time.However,both the modal characterization and the algorithmic implementation of evolving knowledge graphs remain unexplored.To this end,we propose EvolveKG–a general framework that enables algorithms in the static knowledge graphs to learn the evolving ones.EvolveKG quantifies the influence of a historical fact on a current one,called the effectiveness of the fact,and makes knowledge prediction by leveraging all the cross-time knowledge interaction.The novelty of EvolveKG lies in Derivative Graph–a weighted snapshot of evolution at a certain time.Particularly,each weight quantifies knowledge effectiveness through a temporarily decaying function of consistency and attenuation,two proposed factors depicting whether or not the effectiveness of a fact fades away with time.Besides,considering both knowledge creation and loss,we obtain higher prediction accuracy when the effectiveness of all the facts increases with time or remains unchanged.Under four real datasets,the superiority of EvolveKG is confirmed in prediction accuracy. 展开更多
关键词 knowledge graph evolution modal characterization algorithmic implementation
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Near real-time gravitational wave data analysis of the massive black hole binary with TianQin 认领 引用 被引量：5
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作者 Hong-Yu Chen Xiang-Yu Lyu +1 位作者 En-Kun Li Yi-Ming Hu 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2024年第7期175-186,共12页
Space-borne gravitational wave(GW)detectors can detect the merger of massive black holes.The early warning and localization of GW events before merging can be used to inform electromagnetic telescopes and conduct mult... Space-borne gravitational wave(GW)detectors can detect the merger of massive black holes.The early warning and localization of GW events before merging can be used to inform electromagnetic telescopes and conduct multimessenger observations.However,this requires real-time data transmission and analysis capabilities.The geocentric orbit of the space-borne GW detector Tian Qin makes it possible to conduct real-time data transmission.In this study,we develop a search and localization pipeline for massive black hole binaries(MBHBs)with Tian Qin under both regular and real-time data transmission modes.We demonstrate that,with real-time data transmission,MBHBs can be accurately localized on the fly.With the approaching merger,each analysis can be finished in only 40 min.For an MBHB system at a distance of 1 Gpc,if we receive data every hour,then we can pinpoint its location to within less than 1 deg2on the final day before the merger. 展开更多
关键词 gravitational wave detectors and experiments black holes data analysis algorithms and implementation data management
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