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Interactive Quantum Development Environment (IQDE)

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Journal of Quantum Information Science 2016年第2期6卷 105-120页

作者： nikolay Raychev Varna University of Management Varna Bulgaria

This report presents a second version of the Interactive Quantum Development Environment (IQDE), virtualized parallel simulation platform for optimized testing of quantum software. IQDE is an interactive quantum simulator intended for implementation of a classical computer that can simulate numerous controlled and time-dependent operations. The research presents different relations between the operations that can be typically simulated. The virtualized simulation platform carries out numerous single-node and multi-node optimizations, including vectorization, parallelization, cache sharing, as well as overlapping of the computations with the communication. A common strategy for modeling for shared memory is implemented, as well as realistic parallel simulation with cluster management of the parallelization. А detailed analysis of the implementation is performed in order to be demonstrated that the simulator achieves good operation and high efficiency of the hardware, which is only limited by the available memory and the bandwidth of the machine.

关键词： Quantum Operators Phase Space Quantum Circuit

Fundamental Limit for Universal Entanglement Detection

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Journal of Applied Mathematics and Physics 2016年第8期4卷 1567-1577页

作者： nikolay Raychev Varna University of Management Varna Bulgaria

The entanglement, one of the central mysteries of the quantum mechanics, plays a significant role in a variety of applications of the quantum information theory. A natural question in theoretical and experimental importance is whether it is possible to detect a universal entanglement without full diagnostics. The diagnostics relies on a set of quantum trajectories and their records from measurements. This model reflects the probability that each of the measurements may be damaged from interference and decoherence, and may also be associated with recording of continuous signals for an end-time period. The goal is then to retrieve the quantum state such as it had been in the beginning of this measurement process. The proposed solution relies on explicit expression of the probability function through effective matrices contained in the quantum approximation and solutions of ad-joint quantum filters. In this article, we prove а no-go theorem, which outlines this possibility for non-adaptive schemes, which use only single-copy measurements. We also examine in detail а previously conducted experiment, for which it is claimed that detects the entanglement of two-qubit states through adaptive single-copy measurements without full diagnostics. With the conduct of the experiment and the analysis of the data, we demonstrate that the information collected is really sufficient to reconstruct the state. These results reveal a fundamental limit of the single-copy measurements upon the entanglement detection, and provide a common framework for learning the detection of other interesting properties of the quantum states, such as the positivity of partial transposition and the k-symmetric-extendibility.

关键词： Quantum Operators Universal Entanglement Quantum Diagnostics

Ion-conducting Membranes Based on Bacterial Cellulose Nanofibers Modified by Poly(sodium acrylate-co-2-acrylamido-2-methylpropanesulfonic acid)

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Chinese Journal of Polymer Science 2024年第3期42卷 333-343,I0007页

作者： Elizaveta V.Batishcheva nikolay N.Smirnov Natalya V.Bobrova Maria P.Sokolova Michael A.Smirnov Institute of Macromolecular Compounds Russian Academy of SciencesBolshoy pr.31Saint Petersburg 199004Russia

Green method for preparation of ion-conducting membranes(ICM) based on bacterial cellulose nanofibers(CNF) modified by a copolymer of sodium acrylate and 2-acrylamido-2-methylpropanesulfonic acid was elaborated. FTIR and NMR data confirmed grafting of polyacrylate onto cellulose surface. Formation of porous structure of the ICM was controlled by SEM and AFM. The maximal ionic conductivity of the membranes reaches 1.5 and 3.1 mS·cm^(-1)(60 ℃ and 98% relative humidity) when they are saturated with water or H_2SO_4(1 mol·L^(-1)) electrolyte,respectively. Prepared ICM was tested as a separator in a symmetrical supercapacitor with electrodes based on polyaniline hydrogel. The assembled cell demonstrate ability to operate at high current density up to 100 A·g^(-1) maintaining specific capacitance 165 F·g^(-1). Maximal specific capacitance of 289 F·g^(-1) was achieved at current density 1 A·g^(-1). Retaining of 90% of initial capacitance after 10000 of charge-discharge cycles proves high electrochemical stability of prepared ICM.

关键词： Bacterial cellulose Ion conductivity Porous membrane Supercapacitor

Synthesis and Structure of Binary Copper/Silver-Arsenic Clusters Derived from Zintl Ion As_(7)^(3-)

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Chinese Journal of Chemistry 2022年第1期40卷 65-70页

作者： Wei-Qiang Zhang nikolay V.Tkachenko Lei Qiao Alexander I.Boldyrev Zhong-Ming Sun State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and ApplicationsSchool of Materials Science and EngineeringNankai UniversityTianjin 300350China Department of Chemistry and Biochemistry Utah State University 0300 Old Main HillLoganUT 84322-0300USA

Polyarsenides containing coinage metals,[As_(7)Cu(PPh_(3))]^(2-)(1)and[M_(2)As_(14)]^(4-)(M=Cu,2;Ag,3),were synthesized by reactions of the nominal composition K_(3)As_(7) with Group 11 metal *** possible intermediate,cluster 1,was isolated from the solution phase through subtle changes in reaction conditions in the formation process of complex ***,we establish the pathway of the bimetallic bridged clusters[Cu_(2)As_(14)]^(4-)by the oxidation of the[As_(7)Cu(PPh_(3))]^(2-).Quantum chemical calculations reveal the presence of metallophilic interaction in clusters 2 and 3.

关键词： Polyarsenide cluster Reaction mechanism Zintl ions Covalently bound Metallophilic interaction

Method for Calculating Cartesian Coordinates of Operator’s Arm Joints for Anthropomorphic Manipulator Master⁃Slave Control Using Exoskeleton

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Journal of Harbin Institute of Technology(New Series) 2021年第5期28卷 38-46页

作者： Viacheslav Petrenko Fariza Tebueva Vladimir Antonov Mikhail Gurchinsky nikolay Svistunov Institute of Information Technologies and Telecommunications North-Caucasus Federal UniversityStavropol 355009Russian Federation

The main goal of the work is to increase the accuracy of the anthropomorphic manipulator master⁃slave teleoperation by calculating the coordinates of the operator’s arm *** master device is an exoskeleton worn on the operator’s arm,and the slave device is an anthropomorphic manipulator.A method based on the solution of the forward kinematics and empirical simplifications is proposed in this *** position of the nodal points of the exoskeleton was calculated by solving the direct kinematics *** coordinates of the operator’s arm joints,which were rigidly connected to the exoskeleton nodal points,were calculated *** the operator’s arm elbow joint,which was flexibly connected to the exoskeleton,an empirical relation was *** simplified the calculation of the elbow joint *** experiment showed a decrease in the mismatch between the operator’s arm angles and the manipulator joint angles from 20.7°to 2.9°.The proposed method increases the convenience of the master⁃slave control.

关键词： robotics anthropomorphic manipulator exoskeleton motion capture teleoperation

Self-explanatory Components: A New Way to Enhance User's Ability

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Journal of Shanghai University(English Edition) 2001年第Z1期5卷 115-123页

作者： Mirenkov nikolay

Toward nanoscale molecular mass spectrometry imaging via physically constrained machine learning on co-registered multimodal data

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npj Computational Materials 2020年第1期6卷 956-963页

作者： nikolay Borodinov Matthias Lorenz Steven T.King Anton V.Ievlev Olga S.Ovchinnikova Center for Nanophase Materials Sciences Oak Ridge National LaboratoryOak RidgeTN 37831USA University of Tennessee KnoxvilleTNUSA

Mass spectrometry imaging(MSI)plays a pivotal role in investigating the chemical nature of complex systems that underly our understanding in biology and *** fields of life science such as proteomics,lipidomics and metabolomics benefit from the ability to simultaneously identify molecules and pinpoint their distribution across a ***,achieving the necessary submicron spatial resolution to distinguish chemical differences between individual cells and generating intact molecular spectra is still a challenge with any single imaging ***,we developed an approach that combines two MSI techniques,matrix-assisted laser desorption/ionization(MALDI)and time-of-flight secondary ion mass spectrometry(ToF-SIMS),one with low spatial resolution but intact molecular spectra and the other with nanometer spatial resolution but fragmented molecular signatures,to predict molecular MSI spectra with submicron spatial resolution.

关键词： modal mass constrained

A new species of Micryletta (Amphibia: Microhylidae) from southern Thailand

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Zoological Research 2020年第5期41卷 581-588页

作者： Chatmongkon Suwannapoom Tan Van Nguyen Parinya Pawangkhanant Vladislav A.Gorin Siriwadee Chomdej Jing Che nikolay A.Poyarkov Division of Fishery School of Agriculture and Natural ResourcesUniversity of PhayaoPhayao 56000Thailand Department of Species Conservation Save Vietnam's Wildlife CenterNinh BinhVietnam Faculty of Biology Department of Vertebrate ZoologyMoscow State UniversityMoscow 119234Russia Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Research Center in Bioresources for Agriculture Industry and MedicineChiang Mai UniversityChiang Mai 50200Thailand State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesYezin Nay Pyi Taw 05282Myanmar Laboratory of Tropical Ecology Joint Russian-Vietnamese Tropical Research and Technological CenterHanoiVietnam

DEAR EDITOR,We report on a new species,Micryletta dissimulans ***.,from the lowland forests of southern Thailand,which is described based on molecular and morphological *** new species is characterized by a combinatio... 详细信息

关键词： sp.nov. Amphibia new

Bilaterally Symmetrical Transformation between Independent Operators and Rotations

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Journal of Quantum Information Science 2015年第3期5卷 79-88页

作者： nikolay Raychev Department of Computer Systems Varna University of Management Varna Bulgaria

This report describes an approach for representation of quantum operators through rotations and rotation through quantum operators. The approach of the proposed method transforms rotation in a kind of a unitary matrix that corresponds to the rotation. Operations with qubits are very similar to the rotation, but with an added phase coefficient. This fact is used to create a process for rotation between unitary matrices. This approach could be used to modifying the controls to apply in a different basis.

关键词： Quantum Operators Rotations Phase Space Quantum Circuit