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The development of nanophotonics systems for the manipulation of luminescent properties of single quantum emitters is essential for quantum communication and computing. Dielectric nanosystems enable various opportunities for light control through inherent electric and magnetic resonances; however, their full potential has not yet been discovered. Here, emission properties of nitrogen-vacancy (NV) centers in nanodiamonds placed in the near-field zone of silicon nanoresonators are investigated. It is demonstrated experimentally that the spontaneous emission rate of single NV centers in 50 nm nanodiamonds can be modified by their coupling to spherical nanoantennas, reducing the mode of the lifetime distribution by ≈ 2 times from 16 to 9 ns. It is also shown that the collected intensity of photoluminescence emission from multiple NV centers in a 150 nm nanodiamond coupled to a cylindrical nanoantenna is increased by more than 50% compared to the intensity from the same nanodiamond on a bare substrate.

We suggest a novel class of active nanoantennas based on diamond nanoparticles with embedded nitrogen-vacancy centres coupled to Mie resonances of nanoparticles. We theoretically study the optical properties of such nanoantennas including the field enhancement and Purcell effect, and experimentally demonstrate the enhancement of the fluorescence rate of the emitters due to particle resonances, as compared to a nonresonant regime. Our results pave the way towards active dielectric nanophotonics for quantum light sources, bioimaging, and quantum information processing.

Nitrogen-vacancy centers in nanodiamonds are ideal candidates for realization of effective single photon sources. Here, we consider the interaction between the nitrogen-vacancy center and the high-index dielectric nanoparticle. Numerically calculated spectral dependencies of enhancement factor of the emission rate for two different geometries are presented. The results show that ~5-fold enhancement of the emission rate can be achieved with a single dielectric nanoparticle.

Nanoparticle oligomers made of metallic and/or dielectric nanoparticles are able to support sharp Fano resonances originating from an interference of two resonant modes with different spectral width. For practical applications, it is necessary to have an approach for tuning the Fano resonances of a nanostructure after its fabrication. Herein, we demonstrate a novel type of reconfigurable hybrid metaldielectric (Au-Si) oligomers supporting fine-tunable magnetic Fano resonances. We present an expanded experimental results of the Fano resonance tailoring via femtosecond laser melting of the plasmonic parts at the nanoscale. We believe that our findings pave the way to realization of nanophotonic elements that can be adjusted after their manufacturing.

Silicon is a centrosymmetric material, and the studies of nonlinear optical properties of silicon nanoparticles are primarily targeting the third-harmonic generation effects. Here we demonstrate that resonantly excited nanocrystalline silicon nanoparticles fabricated by an optimized laser printing technique exhibit strong second-harmonic generation (SHG) effects. We attribute an unexpectedly high yield of the nonlinear conversion to a nanocrystalline structure of nanoparticles supporting the Mie resonances. Our finding may open novel prospects for a design of nonlinear subwavelength light sources with exceptional functionalities fully integrated in Si-based nanoscale photonic circuits.

Fast progress of all-dielectric nanophotonics, implying application of resonant high-index nanostructures, opens up opportunities for effective electromagnetic field manipulation at nanoscale. Here we demonstrate experimentally the applicability of all-dielectric concept for nanodiamonds with NV-centers providing enhancement of zero phonon line intensity on Mie-type resonances.

Understanding the optical properties of quantum emitters is the cornerstone of many phenomena in nanophotonics. Spontaneous emission from quantum emitters can be modified when they are placed in resonators, for example, near plasmonic or dielectric nanoantennas. We numerically study the Purcell factor of the emitter inside a nanodiamond placed near the resonant silicon nanoparticle. We show that in this system the 11-fold enhancement can be achieved for a specific orientation of the dipole moment of the emitter. The obtained results are of particular importance for nanophotonic applications which aim to control optical properties of quantum light sources.

A summary of the technical advances that are incorporated in the fourth major release of the Q-Chem quantum chemistry program is provided, covering approximately the last seven years. These include developments in density functional theory methods and algorithms, nuclear magnetic resonance (NMR) property evaluation, coupled cluster and perturbation theories, methods for electronically excited and open-shell species, tools for treating extended environments, algorithms for walking on potential surfaces, analysis tools, energy and electron transfer modelling, parallel computing capabilities, and graphical user interfaces. In addition, a selection of example case studies that illustrate these capabilities is given. These include extensive benchmarks of the comparative accuracy of modern density functionals for bonded and non-bonded interactions, tests of attenuated second order Møller-Plesset (MP2) methods for intermolecular interactions, a variety of parallel performance benchmarks, and tests of the accuracy of implicit solvation models. Some specific chemical examples include calculations on the strongly correlated Cr2 dimer, exploring zeolite-catalysed ethane dehydrogenation, energy decomposition analysis of a charged ter-molecular complex arising from glycerol photoionisation, and natural transition orbitals for a Frenkel exciton state in a nine-unit model of a self-assembling nanotube.

A summary of the technical advances that are incorporated in the fourth major release of the Q-Chem quantum chemistry program is provided, covering approximately the last seven years. These include developments in density functional theory methods and algorithms, nuclear magnetic resonance (NMR) property evaluation, coupled cluster and perturbation theories, methods for electronically excited and open-shell species, tools for treating extended environments, algorithms for walking on potential surfaces, analysis tools, energy and electron transfer modelling, parallel computing capabilities, and graphical user interfaces. In addition, a selection of example case studies that illustrate these capabilities is given. These include extensive benchmarks of the comparative accuracy of modern density functionals for bonded and non-bonded interactions, tests of attenuated second order Møller-Plesset (MP2) methods for intermolecular interactions, a variety of parallel performance benchmarks, and tests of the accuracy of implicit solvation models. Some specific chemical examples include calculations on the strongly correlated Cr2 dimer, exploring zeolite-catalysed ethane dehydrogenation, energy decomposition analysis of a charged ter-molecular complex arising from glycerol photoionisation, and natural transition orbitals for a Frenkel exciton state in a nine-unit model of a self-assembling nanotube.

© 2018 IEEE. In the field of jurisprudence, document management plays a key role. Lawyers have to process a large volume of text documents in order to find necessary information. In this paper, we present 'Robot Lawyer' intellectual system. The main goal of the system is to assist lawyers and citizens in providing the necessary information regarding legal processes. 'Robot Lawyer' includes an expert system that use a set of rules to provide reference information and neural network models to give an answer on more complex questions. The article also describes the methods applied for processing textual information. The system developed for the Russian language.

In this article, the authors present modern information systems for the automatization of the full cycle of electronic scientific journal creation and publishing. The advantages of using open-access journal systems are shown. The choice of the Open Journal System (OJS) as the platform for creating an electronic base of scientific journals is substantiated. The authors present the structure of an electronic scientific journal-management system and describe the features of its implementation within the framework of the pilot system of the e-Government of the Republic of Tatarstan. © 2014 Allerton Press, Inc.

© Springer International Publishing Switzerland 2014. The paper discusses the approach to automate the processing of electronic mathematical documents and their transformation into semantic documents. Structuring electronic storage of periodical issues in mathematics and multi-volume works conferences was performed.

The paper gives a review of existing projects of implementation of digital mathematical libraries. An analysis of existing information systems of digital mathematical libraries is performed using the evaluation criteria embedded in the DELOS DLRM model, emphasis is placed to the methods of managing mathematical content on the basis of semantic technologies. All projects are in different degrees of completeness, the range of services provided is different. We found that most of digital mathematical libraries are concentrated on the transfer of the resources to the electronic form and their preservation, rather than on the development of semantic services.

We present the architecture of the system for the intellectual textual analysis in jurisprudence based on microservices. The system can identify common dependencies on an existing database of legal documents, provide legal cases close to each other, familiarize them with the most probable outcomes of judicial review or mark out important places during procedural actions.

© Springer International Publishing Switzerland 2014. The paper discusses the approach to automate the processing of electronic mathematical documents and their transformation into semantic documents. Structuring electronic storage of periodical issues in mathematics and multi-volume works conferences was performed.

In this article, the authors present modern information systems for the automatization of the full cycle of electronic scientific journal creation and publishing. The advantages of using open-access journal systems are shown. The choice of the Open Journal System (OJS) as the platform for creating an electronic base of scientific journals is substantiated. The authors present the structure of an electronic scientific journal-management system and describe the features of its implementation within the framework of the pilot system of the e-Government of the Republic of Tatarstan. © 2014 Allerton Press, Inc.