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Волновые функции вытянутого сфероида и мультиплексирование в релятивистской квантовой криптографии на ортогональных состояниях
Письма в Журнал экспериментальной и теоретической физики. 2014. Т. 100. № 9. С. 674-682.
Potapova T. A., Молотков С. Н.
T.A.Potapova, Molotkov S. N., Laser Physics Letters 2015 Vol. 12 No. 6 P. 065201-065207
The problem of quantum key distribution security in channels with large losses is still open. Quasi-single-photon sources of quantum states with losses in the quantum communication channel open up the possibility of attacking with unambiguous state discrimination (USD) measurements, resulting in a loss of privacy. In this letter, the problem is solved by counting the ...
Added: July 6, 2015
Potapova T. A., Molotkov S. N., Laser Physics Letters 2013 Vol. 10 P. 075205-075211
A new protocol for quantum key distribution through empty space is proposed. Apart from the quantum mechanical restrictions on distinguishability of non-orthogonal states, the protocol employs additional restrictions imposed by special relativity. The protocol ensures generation of a secure key even for the source generating non-strictly single-photon quantum states and for arbitrary losses in quantum ...
Added: October 11, 2013
Молотков С. Н., Письма в Журнал экспериментальной и теоретической физики 2017 Т. 105 № 12 С. 763-767
The security of quantum cryptography protocols after a quantum key distribution (QKD) session is formulated
in terms of proximity between two situations: quantum states corresponding to real and ideal situations
after QKD. The measure of proximity is the trace distance. It is more reasonable to formulate security directly
in terms of the smallness of probability of successive guessing ...
Added: March 2, 2018
Elezov M. S., Ozhegov R., Goltsman G. et al., EPJ Web of Conferences 2017 Vol. 132 P. 1-2
Recently bright-light control of the SSPD has been demonstrated. This attack employed a "backdoor" in the detector biasing scheme. Under bright-light illumination, SSPD becomes resistive and remains "latched" in the resistive state even when the light is switched off. While the SSPD is latched, Eve can simulate SSPD single-photon response by sending strong light pulses, ...
Added: October 13, 2017
Молотков С. Н., Арбеков И. М., Журнал экспериментальной и теоретической физики 2017 Т. 152 № 1 С. 62-78
The proof of the security of quantum key distribution is a rather complex problem. Security is
defined in terms different from the requirements imposed on keys in classical cryptography. In quantum
cryptography, the security of keys is expressed in terms of the closeness of the quantum state of an eavesdropper
after key distribution to an ideal quantum state ...
Added: March 2, 2018
Elezov M. S., Ozhegov R., Goltsman G. et al., , in : EPJ Web of Conferences. XXV-th Congress on Spectroscopy. Troitsk, Moscow, Russia, October 3-7, 2016. Т. 132.: Лез-Юлис : EDP Sciences, 2017. P. 1-2.
Recently bright-light control of the SSPD has been demonstrated. This attack employed a "backdoor" in the detector biasing scheme. Under bright-light illumination, SSPD becomes resistive and remains "latched" in the resistive state even when the light is switched off. While the SSPD is latched, Eve can simulate SSPD single-photon response by sending strong light pulses, ...
Added: July 17, 2018
Борисова А. В., Гармаев Б. Д., Бобров И. Б. et al., Оптика и спектроскопия 2020 Т. 128 № 11 С. 1758-1766
The results of investigation of the spectral characteristics of some passive fiber-optic components, such as optical isolators, circulators, spectral filters and multiplexers, used in quantum key distribution (QKD) systems and contributing to the protection of QKD system from active optical probing attacks are presented. An assessment of the required degree of isolation is also given, ...
Added: November 15, 2022
Potapova T. A., Klimov A., Kulik S. et al., Laser Physics Letters 2017 Vol. 14 P. 1-6
In the paper by Gleim et al (2016 Opt. Express 24 2619), it was declared that the system of quantum cryptography, exploiting quantum key distribution (QKD) protocol BB84 with the additional reference state and encoding in a sub-carrier, is able to distribute secret keys at a distance of 210 km. The following shows that a ...
Added: February 19, 2017
Trefilov D., Ружицкая Д. Д., Жлуктова И. В. et al., Научно-технический вестник информационных технологий, механики и оптики 2021 Т. 21 № 6 С. 837-847
Quantum communication protocols are considered secure provided that all devices included in the system are fully characterized, and side channels are closed. However, as a result of laser radiation exposure, it is possible to change quantum communication systems components’ characteristics. This leads to vulnerabilities appearing in the quantum key distribution system. In this paper, we ...
Added: May 18, 2022
Арбеков И. М., Молотков С. Н., Синильщиков И. В., Журнал экспериментальной и теоретической физики 2021 Т. 159 № 3 С. 434-457
The aim of the paper is the derivation of formulas for the capacities of a classical–quantum communication channel with Gaussian noise, which are analogs of the classical capacities and arise in many problems of quantum information theory, on a simple, heuristic and physically intuitively clear level. The classical capacity of a classical communication channel with ...
Added: November 2, 2022
Furmanov K. K., Nikol'skii I. M., Computational Mathematics and Modeling 2016 Vol. 27 No. 2 P. 247-253
Added: December 22, 2016
Buchstaber V., Limonchenko I., / Cornell University. Series math "arxiv.org". 2018. No. 1808.08851.
We introduce the notions of algebraic and geometric direct families of polytopes and develop a theory of such families. The theory is then applied to the problem of existence of nontrivial higher Massey products in cohomology of moment-angle-complexes. ...
Added: September 29, 2019
Pahomov F., Известия РАН. Серия математическая 2016 Т. 80 № 6 С. 173-216
Полимодальная логика доказуемости
GLP была введена Г. К. Джапаридзе в 1986 г. Она является логикой доказуемости для ряда цепочек предикатов доказуемости возрастающей силы. Всякой полимодальной логике соответствует многообразие полимодальных алгебр. Л. Д. Беклемишевым и А. Виссером был поставлен вопрос о разрешимости элементарной теории свободной GLP-алгебры, порожденной константами 0, 1 [1]. В этой статье для любого натурального n решается аналогичный вопрос для логик GLPn, являющихся ...
Added: December 4, 2017
Sirotin V., Arkhipova M., Dubrova T. A. et al., Bielsko-Biala : University of Bielsko-Biala Press, 2016
The main attributes of modern enterprises should be the flexibility and the ability of forecasting the future. Constant adaptation to the changing environment and the rapidity of undertaking certain actions which are conditioned by specific situations determine the rules for the future position of market competition. Effective and efficient adjustment of the company in line ...
Added: November 2, 2016
Shiryaev A., Zhitlukhin M., Ziemba W., / SSRN. Series Social Science Research Network "Social Science Research Network". 2013.
We study the land and stock markets in Japan circa 1990. While the Nikkei stock average in the late 1980s and its -48% crash in 1990 is generally recognized as a financial market bubble, a bigger bubble and crash was in the golf course membership index market. The crash in the Nikkei which started on ...
Added: March 9, 2014
Maslov V., Теоретическая и математическая физика 2019 Т. 201 № 1 С. 65-83
We study the process of a nucleon separating from an atomic nucleus from the mathematical standpoint
using experimental values of the binding energy for the nucleus of the given substance. A nucleon becomes
a boson at the instant of separating from a fermionic nucleus. We study the further transformations of
boson and fermion states of separation in a ...
Added: November 1, 2019
Litvin Y. V., Абрамов И. В., Технологии техносферной безопасности 2016 № 66
Advanced approach to the assessment of a random time of arrival fire fighting calculation on the object of protection, the time of their employment and the free combustion. There is some quantitative assessments with the review of analytical methods and simulation ...
Added: August 27, 2016
Decrouez G. G., Hall P., Bernoulli: a journal of mathematical statistics and probability 2013 Vol. 19 No. 4 P. 1268-1293
Motivated by a problem arising when analysing data from quarantine searches, we explore properties of distributions of sums of independent means of independent lattice-valued random variables. The aim is to determine the extent to which approximations to those sums require continuity corrections. We show that, in cases where there are only two different means, the ...
Added: September 29, 2014
Турунцева М., Астафьева Е., Баева М. et al., Научный вестник ИЭП им. Гайдара.ру (электронный журнал) 2015 № 3(85) С. 3-33
В статье представлены расчеты прогнозных значений различных экономических показателей Российской Федерации во II–III кварталах 2015 г., построенные на основе моделей временных рядов, структурных эконометрических уравнений и моделей, построенных с использованием результатов конъюнктурных опросов. ...
Added: June 18, 2015
Nelyubin A. P., Podinovskiy V. V., Журнал вычислительной математики и математической физики 2023 Т. 63 № 5 С. 717-730
Развит новый подход к оцениванию параметров аппроксимации, при котором удаленность аппроксимирующей функции от заданного конечного множества точек оценивается векторным критерием, компонентами которого являются модули невязок во всех точках. При помощи этого критерия задается отношение предпочтения в удаленности и лучшей считается аппроксимирующая функция, недоминируемая по такому отношению. Изучена аппроксимация для нескольких отношений предпочтения, в том числе ...
Added: July 3, 2023
Vyalyi M., Дискретная математика 1991 Т. 3 № 3 С. 35-45
Added: October 17, 2014
Bagrov A. N., Gordin V. A., Bykov P. L., Russian Meteorology and Hydrology 2014 No. 5 P. 283-291
The evaluations of the forecasts of surface air temperature and precipitation for the period July 2010 - June 2013 are presented. The forecasting of surface air temperature at 5 days and precipitation at 3 days are considered. Our complex statistical scheme uses the results of the best foreign global schemes, regional scheme COSMO-RU7. The joint ...
Added: December 7, 2013
Min Namkung, Younghun K., Scientific Reports 2018 Vol. 8 No. 1 P. 16915-1-16915-18
Sequential state discrimination is a strategy for quantum state discrimination of a sender’s quantum
states when N receivers are separately located. In this report, we propose optical designs that can
perform sequential state discrimination of two coherent states. For this purpose, we consider not
only binary phase-shifting-key (BPSK) signals but also general coherent states, with arbitrary prior
probabilities. Since ...
Added: November 16, 2020
Levashov M., Кухаренко А. В., Вопросы защиты информации 2018 № 2 С. 66-71
Рассматривается статистическая модель одного этапа системы фрод-мониторинга транзакций в интернет-банкинге. Построен и рассчитан близкий к отношению правдоподобия критерий отсева мошеннических транзакций. Для выборочных распределений, полученных на выборке объема в 1 млн реальных транзакций, вычислены параметры эффективности этого критерия. ...
Added: June 14, 2018