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Towards a feasible implementation of quantum neural networks using quantum dots
Applied Physics Letters. 2016. Vol. 108. No. 10. P. 103108 .
We propose an implementation of quantum neural networks using an array of quantum dots with dipole-dipole interactions. We demonstrate that this implementation is both feasible and versatile by studying it within the framework of GaAs based quantum dotqubits coupled to a reservoir of acoustic phonons. Using numerically exact Feynman integral calculations, we have found that the quantum coherence in our neural networks survive for over a hundred ps even at liquid nitrogen temperatures (77 K), which is three orders of magnitude higher than current implementations, which are based on SQUID-based systems operating at temperatures in the mK range.
Keywords: нейронные сетиквантовые вычисленияneural networksквантовые точкиquantum dotsquantum computing
Publication based on the results of:
Altaisky M. V., Zolnikova N. N., Kaputkina N. E. et al., Photonics and Nanostructures - Fundamentals and Applications 2017 Vol. 24 No. May P. 24-28
We studied the quantum correlations between the nodes in a quantum neural network built of an array of quantum dots with dipole–dipole interaction. By means of the quasiadiabatic path integral simulation of the density matrix evolution in a presence of the common phonon bath we have shown the coherence in such system can survive up ...
Added: May 20, 2017
Zunin V., Romanov A., Проблемы разработки перспективных микро- и наноэлектронных систем (МЭС) 2021 № 2 С. 83-90
The paper provides an overview of the current state of the implementation of neural networks and their methods of execution. A detailed description of the main components of the Intel® OpenVINO ™ Toolkit for executing neural networks on various Intel hardware platforms (CPU, GPU, Neural Compute Stick 2) is considered. The works in which this ...
Added: February 15, 2023
Malafeev A., Nikolaev K., , in : Analysis of Images, Social Networks and Texts. 8th International Conference, AIST 2019, Kazan, Russia, July 17–19, 2019, Revised Selected Papers. Communications in Computer and Information Science. Vol. 1086.: Springer, 2020. P. 154-159.
In this paper, a deep learning method study is conducted to solve a new multiclass text classification problem, identifying user interests by text messages. We used an original dataset of almost 90 thousand forum text messages, labeled for ten interests. We experimented with different modern neural network architectures: recurrent and convolutional, as well as simpler ...
Added: November 7, 2019
Максимов А., Пещеренко А. Б., Филатов Е. В. et al., Письма в Журнал экспериментальной и теоретической физики 2017 Т. 106 № 10 С. 615-620
A detailed study of the degree of circular polarization and the angular dependence of the emission spectra of
an array of InAs quantum dots embedded in GaAs photonic nanostructures with chiral symmetry in the
absence of an external magnetic field is carried out. A strong angular dependence of the spectra and the degree
of circular polarization of radiation ...
Added: January 31, 2019
Zhukov A., Moiseev E., Nadtochiy A. et al., Письма в Журнал технической физики 2021 Т. 47 № 13 С. 28-31
The energy consumption of an uncooled microdisk quantum well-dot laser under high-frequency modulation was investigated. For a microlaser with a diameter of 20 μm, the lowest power consumption of 1.6 pJ was obtained per one bit of data transmitted using an optical signal. ...
Added: October 11, 2021
Жуков А. Е., СПб. : ПОЛИТЕХ-ПРЕСС, 2019
Пособие включает в себя учебные материалы по физике и технологии полупроводниковых квантовых точек и лазеров на основе квантовых точек, включая микролазеры. Квантовые точки – это новая разновидность полупроводниковых квантоворазмерных структур (наноструктур), в которых движение носителей заряда ограничено во всех трех направлениях. Возникающая в результате размерного квантования модификация плотности состояний, а также большая энергия локализации носителей ...
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Rzaev E., Khanaev A., Amerikanov A., , in : 2021 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). : IEEE, 2021. P. 719-723.
Added: July 4, 2021
Kryzhanovskaya N., Zubov Fedor I., Moiseev E. et al., Laser Physics Letters 2022 Vol. 19 No. 1 Article 016201
Characteristics of a compact III–V optocoupler heterogeneously integrated on a silicon substrate
and formed by a 31 μm in diameter microdisk (MD) laser with a closely-spaced
50 μm × 200 μm waveguide photodetector are presented. Both optoelectronic devices were
fabricated from the epitaxial heterostroctructures with InGaAs/GaAs quantum well-dot layers.
The measured dark current density of the photodetector was as ...
Added: December 2, 2021
Fedorova E., Осетров Р. А., Демин И. С. et al., Российский журнал менеджмента 2017 Т. 15 № 4 С. 441-462
The paper is devoted to the analysis of CEO letters as an instrument for influencing the expectations of shareholders and potential investors. The aim of the research is to analyze empirically the influence of semantic characteristics of CEO letters on financial indicators of the company. The authors suggested that CEO letter’s tonality, its length and ...
Added: October 23, 2018
Zhukov A., Applied Physics B: Lasers and Optics 2018 Vol. 124 No. 2 Article 21
We report the observation of optically pumped continuous wave lasing in a self-rolled-up InGaAs/GaAs quantum dot microtube at room temperature. Single layer of InAs quantum dots (~ 2.6 ML coverage) in a GaAs well sandwiched by two AlGaAs barriers are incorporated into the tube wall as the gain media. As-fabricated microtube is supported by a 300-nm-thick Au pad, ...
Added: March 16, 2021
Зубов Ф. И., Максимов М. В., Kryzhanovskaya N. et al., Письма в Журнал технической физики 2021 Т. 47 № 20 С. 3-6
The output power is studied under continuous-wave operation of microdisk lasers with InGaAs/GaAs quantum well-dots hybridly integrated with a silicon substrate with the epitaxial side down using the thermocompression bonding method. Owing a decrease in the thermal resistance and suppression of self-heating, an increase in the values of currents is observed at which the power ...
Added: October 14, 2021
Arkhipova M., Экономика региона 2022 Т. 18 № 2 С. 581-594
The article examines new methodologies for modelling crop yield in agricultural regions of Russia based on the use of remote capabilities to get information on the field state. The proposed approach can be applied to develop indicator systems and create methodological platforms and models necessary to obtain more accurate estimates. In comparison with the traditional ...
Added: January 12, 2023
Semenenko M. G., Kniazeva I. V., Beckel L. S. et al., , in : IOP Conference Series: Materials Science and Engineering, Volume 537, Issue 3. Vol. 537. Issue 3.: Institute of Physics Publishing (IOP), 2019.
Added: October 20, 2021
Pospelov I. G., В кн. : III Моисеевские чтения: Культура и гуманитарные проблемы современной цивилизации: доклады и материалы Общероссийской (национальной) научной конференции. Москва, 11–12 марта 2020 г. : М. : Издательство Московского гуманитарного университета, 2020. Гл. 1. С. 3-10.
Текст опирается в основном на главу "Моделирование экономических структур" (Поспелов, 2003). Описанная в главе 11.2 книги система ЭКОМОД базируется в значительной степени на материале курса лекций "Системный анализ рыночной экономики", который я долгое время продолжаю читать в МФТИ (Системный анализ, 2018). В этой брошюре, в частности, более подробно и последовательно, чем в первой из названных ...
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Kryzhanovskaya N., Zhukov A., Moiseev E. et al., Journal of Physics D: Applied Physics 2021 Vol. 54 Article 453001
Semiconductor whispering-gallery-mode (WGM) microresonators are promising candidates for
creating compact, energy-efficient light sources (microlasers) for various applications owing to
their small footprints, high Q factors, planar geometry, in-plane light emission, and high
sensitivity to the environment. In this review we present the most recent advances in III–V
microdisk/microring lasers. We briefly describe basic physics behind photonic WGM resonators
and discuss ...
Added: September 3, 2021
Makhov I., Ivanov K., Moiseev E. et al., Nanomaterials 2023 Vol. 13 No. 5 Article 877
One-state and two-state lasing is investigated experimentally and through numerical simulation
as a function of temperature in microdisk lasers with Stranski–Krastanow InAs/InGaAs/GaAs
quantum dots. Near room temperature, the temperature-induced increment of the ground-state
threshold current density is relatively weak and can be described by a characteristic temperature
of about 150 K. At elevated temperatures, a faster (super-exponential) increase in ...
Added: April 25, 2023
Osipov D., Евразийский филологический вестник 2023 No. 2 P. 21-39
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Nazarova V., Ульзутуева Б. Д., Управление финансовыми рисками 2016 № 1 (45) С. 42-57
The first part of the issue gives general information about foreign exchange market (FOREX), review of forecasting foreign exchange rate is given. In addition we will consider the new model of nonlinear analysis to give a broader theoretical basis to the research - an artificial neural network (ANN).The nonlinear analysis and the ANN is still ...
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Pushkarev E., Вестник Южно-Уральского государственного университета. Серия: Лингвистика 2015 Т. 12 № 4 С. 56-60
The paper theorizes on the general architectonics of idealized cognitive models (ICMs) and their involvement in metonymy and metaphor. The article posits that an ICM's structure should reflect the architecture of the neural network/s engaged in processing of a given concept. The ICM nodes, or cogs, construct a complex, hierarchically organized neural connections, with the ...
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Chistyakov A., Zvaigzne M., Nikitenko V. et al., The Journal of Physical Chemistry Letters 2017 Vol. 8 No. 17 P. 4129-4139
Quantum dot (QD) solids represent a new type of condensed matter drawing high fundamental and applied interest. Quantum confinement in individual QDs, combined with macroscopic scale whole materials, leads to novel exciton and charge transfer features that are particularly relevant to optoelectronic applications. This Perspective discusses the structure of semiconductor QD solids, optical and spectral ...
Added: October 7, 2017
Zhukov A., Kryzhanovskaya N., Moiseev E. et al., Физика и техника полупроводников 2021 Т. 55 № 9 С. 820-825
Gain saturation in a semiconductor optical amplifier
with an array of quantum dots was studied analytically and by
numerical simulation on the basis of an analysis of the rate
equations. It is shown that, at a moderate injection level, the
saturation power increases in proportion to the current density, and
then reaches its maximum value, limited by the rate of ...
Added: October 11, 2021
Akopov A. S., Аудит и финансовый анализ 2010 № 3 С. 310-317
In work the developed model of adaptive management by the vertically integrated companies based on the system approach supporting the mechanism of an operational management in a uniform cycle of strategic planning, within the limits of faster time is presented. Thus for a finding of optimum values of operating parameters special algorithms of a class ...
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Makhov I., Бекман А. А., Кулагина М. М. et al., Письма в Журнал технической физики 2022 Т. 48 № 12 С. 40-43
В широком диапазоне инжекционных токов исследованы спектральные зависимости интенсивности электролюминесценции микродискового лазера диаметром 31 μm с активной областью на основе квантовых точек InAs/InGaAs, работающего в непрерывном режиме генерации. Впервые в инжекционном микродисковом лазере продемонстрирована генерация одновременно через основное и возбужденное состояния квантовых точек при высоких уровнях накачки. При слабых уровнях накачки лазерная генерация протекает через ...
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Cosacchi M., Wiercinski J., Seidelmann T. et al., Physical Review Research 2020 Vol. 2 Article 033489
The on-demand preparation of higher-order Fock states is of fundamental importance in quantum information sciences. We propose and compare different protocols to generate higher-order Fock states in solid state quantum-dot–cavity systems. The protocols make use of a series of laser pulses to excite the quantum dot exciton and off-resonant pulses to control the detuning between ...
Added: February 24, 2022