Zobrazeno 1 - 10
of 10
pro vyhledávání: '"M. A. Yurischev"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 1, Pp 1-14 (2024)
Abstract The merging of quantum information science with the relativity theory presents novel opportunities for understanding the enigmas surrounding the transmission of information in relation to black holes. For this purpose, we study the quantumne
Externí odkaz:
https://doaj.org/article/e28f3e8345c640099cbb0eb9fa932c64
Publikováno v:
Quantum Information Processing. 22
The magnetic Otto thermal machine based on a two-spin-1/2 XYZ working fluid in the presence of an inhomogeneous magnetic field and antisymmetric Dzyaloshinsky--Moriya (DM) and symmetric Kaplan--Shekhtman--Entin-Wohlman--Aharony (KSEA) interactions is
Autor:
A. V. Fedorova, M. A. Yurischev
Using group-theoretical approach we found a family of four nine-parameter quantum states for the two-spin-1/2 Heisenberg system in an external magnetic field and with multiple components of Dzyaloshinsky-Moriya (DM) and Kaplan-Shekhtman-Entin-Wohlman
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9941c0df4af822cf9c9adc4362d0f37e
Autor:
M. A. Yurischev
Publikováno v:
Quantum Information Processing. 19
The anisotropic Heisenberg two-spin-1/2 model in an inhomogeneous magnetic field with both antisymmetric Dzyaloshinsky-Moriya and symmetric Kaplan-Shekhtman-Entin-Wohlman-Aharony cross interactions is considered at thermal equilibrium. Using a group-
On the possibility to detect quantum correlation regions with the variable optimal measurement angle
Quantum correlations described by quantum discord and one-way quantum deficit can contain ordinary regions with {\em constant} (i.e., universal) optimal measurement angle $0$ or $\pi/2$ with respect to the $z$-axis and regions with a {\em variable} (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b7e1d1534bfcc2daf32fc96e86c7b1f
http://arxiv.org/abs/1903.08342
http://arxiv.org/abs/1903.08342
Autor:
M. A. Yurischev
The one-way quantum deficit, a measure of quantum correlation, can exhibit for X quantum states the regions (subdomains) with the phases $\Delta_0$ and $\Delta_{\pi/2}$ which are characterized by constant (i.e., universal) optimal measurement angles,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c49678b5a1a747f4ad8fc9caf0c33926
http://arxiv.org/abs/1804.03755
http://arxiv.org/abs/1804.03755
Autor:
M. A. Yurischev
Publikováno v:
Quantum Information Processing. 16
For the XXZ subclass of symmetric two-qubit X states, we study the behavior of quantum conditional entropy S_{cond} as a function of measurement angle \theta\in[0,\pi/2]. Numerical calculations show that the function S_{cond}(\theta) for X states can
Quantum correlations represent a fundamental tool for studies ranging from basic science to quantum technologies. Different non-classical correlations have been identified and studied, as entanglement and discord. In this Paper we explore experimenta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9eccdc1ac19f85fe5e0617449f2ee86
http://arxiv.org/abs/1612.04589
http://arxiv.org/abs/1612.04589
Autor:
E. I. Kuznetsova, M. A. Yurischev
Publikováno v:
Quantum Information Processing. 12:3587-3605
The behavior of total quantum correlations (discord) in dimers consisting of dipolar-coupled spins 1/2 are studied. We found that the discord $$Q=0$$Q=0 at absolute zero temperature. As the temperature $$T$$T increases, the quantum correlations in th
Autor:
M. A. Yurischev
Quantum discord Q is a function of density matrix elements. The domain of such a function in the case of two-qubit system with X density matrix may consist of three subdomains at most: two ones where the quantum discord is expressed in closed analyti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08008748d1cb19840c3d2ea7f1ae79f7
http://arxiv.org/abs/1503.00840
http://arxiv.org/abs/1503.00840