Персона: Низовцев, Александр Павлович
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Институт нанотехнологий в электронике, спинтронике и фотонике
Институт ИНТЭЛ занимается научной деятельностью и подготовкой специалистов в области исследования физических принципов, проектирования и разработки технологий создания компонентной базы электроники гражданского и специального назначения, а также построения современных приборов на её основе.
Наша основная цель – это создание и развитие научно-образовательного центра мирового уровня в области наноструктурных материалов и устройств электроники, спинтроники, фотоники, а также создание эффективной инновационной среды в области СВЧ-электронной и радиационно-стойкой компонентной базы, источников ТГц излучения, ионно-кластерных технологий материалов.
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Александр Павлович
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- ПубликацияТолько метаданныеHyperfine Characteristics of Quantum Registers NV-13С in Diamond Nanocrystals Formed by Seeding Approach from Isotopic Aza-Adamantane and Methyl-Aza-Adamanthane(2020) Kilin, S. Y.; Pushkarchuk, A. L.; Kuten, S. A.; Jelezko, F.; Nizovtsev, A. P.; Gusev, A. S.; Низовцев, Александр Павлович; Гусев, Александр Сергеевич© 2020, Pleiades Publishing, Ltd.Abstract: We predict the characteristics of hyperfine interactions (hfi) for a number of electron-nuclear spin systems NV-13C in diamonds grown by seeding approach from the specific isotopic aza-adamantane or methyl-aza-adamantane molecules differing in 13C position in the precursor as well as in the orientation of the NV center in the post-obtained diamond. For the purpose we have used the spatial and hfi data simulated previously for the cluster C510[NV]–H252. The data obtained can be used to identify (and correlate with the precursor used) the specific NV-13C spin system by measuring the hfi-induced splitting in optically detected magnetic resonance spectra being characteristic for the NV-13C system.
- ПубликацияТолько метаданныеQuantum Memory on 13C–13C Dimers in Diamond with NV Centers: Simulation by Quantum Chemistry Methods(2023) Nizovtsev, A. P.; Pushkarchuk, A. L.; Gusev, A. S.; Kargin, N. I.; Низовцев, Александр Павлович; Пушкарчук, Александр Леонидович; Гусев, Александр Сергеевич; Каргин, Николай Иванович
- ПубликацияТолько метаданныеVector Magnetometry Using a Single NV–13C Complex in Diamond(2023) Nizovtsev, A. P.; Kukin, N. S.; Muradova, A. R.; Semenov, P. A.; Salkazanov, A. T.; Smirnova, M. O.; Pushkarchuk, A. L.; Vasiliev, A. N.; Kargin, N. I.; Низовцев, Александр Павлович; Кукин, Николай Сергеевич; Мурадова, Анна Руслановна; Семенов, Павел Александрович; Салказанов, Александр Тотразович; Смирнова, Марина Олеговна; Пушкарчук, Александр Леонидович; Васильев, Александр Николаевич; Каргин, Николай Иванович
- ПубликацияТолько метаданныеDFT Simulation of Electronic and Spin Properties of GeV– Color Center in Volume and Near-Surface of Nanodiamond for Temperature Sensor Applications(2020) Pushkarchuk, A. L.; Kilin, S. Y.; Kuten, S. A.; Pushkarchuk, V. A.; Nizovtsev, A. P.; Низовцев, Александр Павлович© 2020, Pleiades Publishing, Ltd.Abstract: The “germanium-vacancy” (GeV) center in diamond can be used as Temperature Sensors. The idea of GeV-based thermometry is based on optical measurements of the spectral shift of the zero-phonon line and its spectral width as a function of temperature changes. At the same time optical characteristics of GeV center which is located near-surface could be modified by formation of defect states in the band gap based on surface impurities and dangling bonds. The electronic structure of the GeV center determines its optical properties. The goal of this study was to investigate comparatively the geometric characteristics and electronic structure of the GeV center in the volume and near-surface (100) of nanodiamond in cluster approximation. It was shown for the first time that formation of isolated dangling bond on the (100) diamond surface leads to formation of unoccupied state in the band gap in vicinity of 1 eV, which is located on the distance of 1.9 eV of conduction band edge. This state in the band gap may influence optical properties of GeV in diamond.
- ПубликацияОткрытый доступHyperfine interactions in the nv‐13 c quantum registers in diamond grown from the azaadamantane seed(2021) Kilin, S. Ya.; Jelezko, F.; Nizovtsev, A. P.; Pushkarchuk, A. L.; Kargin, N. I.; Gusev, A. S.; Smirnova, M. O.; Низовцев, Александр Павлович; Пушкарчук, Александр Леонидович; Каргин, Николай Иванович; Гусев, Александр Сергеевич; Смирнова, Марина Олеговна© 2021 by the authors. Licensee MDPI, Basel, Switzerland.Nanostructured diamonds hosting optically active paramagnetic color centers (NV, SiV, GeV, etc.) and hyperfine‐coupled with them quantum memory13C nuclear spins situated in diamond lattice are currently of great interest to implement emerging quantum technologies (quantum information processing, quantum sensing and metrology). Current methods of creation such as elec-tronic‐nuclear spin systems are inherently probabilistic with respect to mutual location of color center electronic spin and13 C nuclear spins. A new bottom‐up approach to fabricate such systems is to synthesize first chemically appropriate diamond‐like organic molecules containing desired isotopic constituents in definite positions and then use them as a seed for diamond growth to produce mac-roscopic diamonds, subsequently creating vacancy‐related color centers in them. In particular, diamonds incorporating coupled NV‐13С spin systems (quantum registers) with specific mutual ar-rangements of NV and13C can be obtained from anisotopic azaadamantane molecule. Here we pre-dict the characteristics of hyperfine interactions (hfi) for the NV‐13 C systems in diamonds grown from various isotopically substituted azaadamantane molecules differing in13C position in the seed, as well as the orientation of the NV center in the post‐obtained diamond. We used the spatial and hfi data simulated earlier for the H‐terminated cluster C510[NV]‐ H252. The data obtained can be used to identify (and correlate with the seed used) the specific NV‐13C spin system by measuring, e.g., the hfi‐induced splitting of the mS = ±1 sublevels of the NV center in optically detected magnetic resonance (ODMR) spectra being characteristic for various NV‐13 C systems.
- ПубликацияТолько метаданныеSpatial and Hyperfine Characteristics of SiV– and SiV0 Color Centers in Diamond: DFT Simulation(2020) Kilin, S. Y.; Pushkarchuk, A. L.; Kuten, S. A.; Poklonski, N. A.; Nizovtsev, A. P.; Низовцев, Александр Павлович© 2020, Pleiades Publishing, Ltd.Abstract: One of the most promising platforms to implement quantum technologies are coupled electron-nuclear spins in diamond in which the electrons of paramagnetic color centers play a role of “fast” qubits, while nuclear spins of nearby 13C atoms can store quantum information for a very long time due to their exceptionally high isolation from the environment. Essential prerequisite for a high-fidelity spin manipulation in these systems with tailored control pulse sequences is a complete knowledge of hyperfine interactions. Development of this understanding for the negatively charged “silicon-vacancy” (SiV–) and neutral (SiV0) color center, is a primary goal of this article, where we are presenting shortly our recent results of computer simulation of spatial and hyperfine characteristics of these SiV centers in H-terminated cluster C128[SiV]H98 along with their comparison with available experimental data.