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## The effect of external magnetic ﬁeld changing on the correlated quantum dot dynamics

Journal of Magnetism and Magnetic Materials. 2018. Vol. 456. P. 194-198.

The non-stationary response of local magnetic moment to abrupt switching ‘‘on” and ‘‘off” of external

magnetic ﬁeld was studied for a single-level quantum dot (QD) coupled to a reservoir. We found that

transient processes look different for the shallow and deep localized energy level. It was demonstrated

that for deep energy level the relaxation rates of the local magnetic moment strongly differ in the case

of magnetic ﬁeld switching ‘‘on” or ‘‘off”. Obtained results can be applied in the area of dynamic memory

devices stabilization in the presence of magnetic ﬁeld

Arseyev P., Mantsevich V. N., Maslova N. S., Solid State Communications 2013 Vol. 168 P. 36-41

We analyzed the localized charge dynamics in the system of interacting single-level quantum dots (QDs) coupled to the continuous spectrum states in the presence of Coulomb interaction between electrons within the dots. Different dots geometry and initial charge configurations were considered. The analysis was performed by means of Heisenberg equations for localized electrons pair correlators. ...

Added: October 28, 2014

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

Arseyev P., Mantsevich V. N., Maslova N. S., JETP Letters 2013 Vol. 97 No. 6 P. 398-403

We demonstrated that electron-phonon interaction leads to the increasing of localized charge relaxation rate. We also found that several time scales with different relaxation rates appear in the system in the case of non-resonant tunneling between the dots. We revealed the formation of oscillations in the filling numbers time evolution caused by the emission and ...

Added: October 28, 2014

Kuleshov V. M., Mur V. D., Narozhny N. B. et al., Few-Body Systems 2016

We show that there exists a non-trivial topological phase in circular two-dimensional quantum dots with an odd number of electrons. The possible non-zero value of this phase is explained by axial symmetry of two-dimensional quantum systems. The particular value of this phase (1995). Hence, these data may be considered as the first experimental evidence for ...

Added: October 18, 2016

Маслова Н. С., Рожанский И. В., Манцевич В. Н. et al., Physical Review B: Condensed Matter and Materials Physics 2018 Vol. 97 P. 195445-1-195445-6

We present a theoretical analysis of dynamic spin injection due to spin-dependent tunneling between a quantum
well (QW) and a bound state split in spin projection due to an exchange interaction or external magnetic ﬁeld. We
focus on the impact of Coulomb correlations at the bound state on spin polarization and sheet density kinetics of
the charge carriers ...

Added: August 15, 2018

Arseyev P., Mantsevich V. N., Maslova N. S., JETP Letters 2011 Vol. 94 No. 5 P. 422-428

We present theoretical investigation of spatial charge distribution in the two-level system with strong Coulomb correlations by means of Heisenberg equations analysis for localized states total electron filling numbers taking into account pair correlations of local electron density. It was found that tunneling current through nanometer scale structure with strongly coupled localized states causes Coulomb ...

Added: October 28, 2014

Вальков В. В., Шустин М. С., Аксенов С. В. et al., Успехи физических наук 2022 Т. 192 № 1 С. 3-44

The review discusses properties of superconducting phases with a nontrivial topology and conditions for their implementation in condensed matter, criteria for the appearance of the Majorana-type elementary excitations in solids, as well as principles and experimental methods for identifying Majorana bound states (MBSs). Along with the well-known models of the Kitaev chain and superconducting nanowire ...

Added: March 16, 2021

Rozhansky I. V., Mantsevich V. N., Maslova N. S. et al., Physica E: Low-Dimensional Systems and Nanostructures 2021 Vol. 132 Article 114755

We theoretically analyze the dynamics of circular polarized photoluminescence (PL) associated with split-off
states emerging in a semiconductor quantum well (QW) due to tunnel coupling with remote spin-split bound
states. A mechanism for ultrafast PL polarization switching is proposed based on tunnel barrier transparency
modulation. Such modulation can be experimentally realized by applying a gate voltage to the ...

Added: June 22, 2021

Diagnostics of many-particle electronic states: non-stationary currents and residual charge dynamics

Arseyev P., Maslova N. S., Mantsevich V. N., JETP Letters 2017 Vol. 105 No. 2 P. 106-107

We propose the method for identifying many particle electronic states in the system of coupled quantum dots (impurities) with Coulomb correlations. We demonstrate that different electronic states can be distinguished by the complex analysis of localized charge dynamics and non-stationary characteristics. We show that localized charge time evolution strongly depends on the properties of initial ...

Added: February 21, 2017

Arseyev P., Maslova N. S., Mantsevich V. N., JETP Letters 2014 Vol. 100 No. 4 P. 291-2916

We investigated the tunneling cureent peculiarities in the system of two coupled by means of the external ﬁeld quantum dots (QDs) weakly connected to the electrodes in the presence of Cou lomb correlations. It was found that tuning of the Rabi frequency induces fast multiple tunneling current switching and leads to the negative tunneling conductivity. ...

Added: March 14, 2015

Arseyev P., Mantsevich V. N., Maslova N. S., Journal of Experimental and Theoretical Physics 2012 Vol. 141 No. 6 P. 1-13

It was shown that tunneling current flowing through a system with Coulomb correlations leads to charge redistribution between the different localized states. Simple model consisting of two electron levels have been analyzed by means of Heisenberg motion equations taking into account all order correlations of electron filling numbers in localized states exactly. We consider various ...

Added: October 28, 2014

Arseyev P., Mantsevich V. N., Maslova N. S., The European Physical Journal B 2012 Vol. 85 No. 410

We investigated the peculiarities of non-equilibrium charge states and spin configurations in the system of two strongly coupled quantum dots (QDs) weakly connected to the electrodes in the presence of Coulomb correlations. We analyzed the modification of non-equilibrium charge states and different spin configurations of the system in a wide range of applied bias voltage ...

Added: October 28, 2014

Andrew G. Semenov, Zaikin A., Physical Review B: Condensed Matter and Materials Physics 2013 Vol. 88 No. 5 P. 054505-1-054505-10

We investigate the effect of interacting quantum phase slips on persistent current and its fluctuations in ultrathin superconducting nanowires and nanorings pierced by the external magnetic flux. We derive the effective action for these systems and map the original problem onto an effective sine-Gordon theory on torus. We evaluate both the flux dependent persistent current ...

Added: February 9, 2015

Pelinovsky E., Didenkulova I., Rybkin A., Journal of Fluid Mechanics 2014 Vol. 748 P. 416-432

We present an exact analytical solution of the nonlinear shallow water theory for wave run-up in inclined channels of arbitrary cross-section, which generalizes previous studies on wave run-up for a plane beach and channels of parabolic cross-section. The solution is found using a hodograph-type transform, which extends the well-known Carrier–Greenspan transform for wave run-up on ...

Added: November 19, 2014

Kryzhanovskaya N., Maximov M., Zhukov A. et al., Journal of Lightwave Technology 2015 Vol. 33 No. 1 P. 171-175

A dense array of InGaAs quantum dots formed by MOCVD on a misoriented GaAs substrate has been used as an active medium of microdisk resonators of various types: a cylindrical disk, an undercut disk, and a suspended disk. Single-mode room temperature lasing in a 9-μm microdisk laser is demonstrated with a dominant line around 1.13 ...

Added: September 30, 2020

Prazdnichnykh A., Glazov M., Ren L. et al., Physical Review B: Condensed Matter and Materials Physics 2021 Vol. 103 No. 8 P. 085302-1-085302-12

The exciton valley dynamics in van der Waals heterostructures with transition metal dichalcogenide monolayers is driven by the long-range exchange interaction between the electron and the hole in the exciton. It couples the states active in the opposite circular polarizations resulting in the longitudinal-transverse splitting of excitons propagating in the monolayer plane. Here we study ...

Added: March 5, 2021

M. Lazarev, Journal of Applied Physics 2023

We investigate experimentally and theoretically the impact of valence band mixing and structure of confined states on the polarization of light emitted from GaAs/AlGaAs semiconductor quantum dots (QDs) and quantum wires QWRs with tailored heterostructure potential. Such nanostructures with parabolic-profile confinement potentials were realized by organometallic vapor phase epitaxy inside pyramidal pits. Different degrees of ...

Added: October 8, 2021

Marshakov A., Миронов А. Д., Морозов А. Ю., Journal of Geometry and Physics 2011 Vol. 61 P. 1203-1222

We present a summary of current knowledge about the AGT relations for conformal blocks with additional insertion of the simplest degenerate operator, and a special choice of the corresponding intermediate dimension, when the conformal blocks satisfy hypergeometric-type differential equations in position of the degenerate operator. A special attention is devoted to representation of conformal block ...

Added: February 28, 2013

Окубо Ю. undefined., Journal of Physics: Conference Series 2017 Vol. 804 No. 012036 P. 1-8

We investigate the existence and the orthogonality of the generalized Jack symmetric functions which play an important role in the AGT relations. We show their orthogonality by deforming them to the generalized Macdonald symmetric functions. ...

Added: October 26, 2017

Bodrova A., Osinsky A., Brilliantov N., Scientific Reports 2020 Vol. 10 Article 693

We study analytically and numerically the distribution of granular temperatures in granular mixtures for
different dissipation mechanisms of inelastic inter-particle collisions. Both driven and force-free systems
are analyzed. We demonstrate that the simplified model of a constant restitution coefficient fails to
predict even qualitatively a granular temperature distribution in a homogeneous cooling state. At the
same time we reveal ...

Added: February 25, 2020

Budkov Y., Kolesnikov A. L., Polymer Science - Series C 2018 Vol. 60 No. Supplement 1 P. 148-159

Theoretical models of the conformational behavior of flexible polymer chains in mixed solvents enunciated in the world literature during the last decade are critically reviewed. Models describing different mechanisms of coil-to-globule transitions in a good solvent induced by cosolvent addition are highlighted. Special attention is given to the analysis of theoretical approaches to describing the ...

Added: November 30, 2018

М. : ИКИ РАН, 2011

Added: March 26, 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

Akhmedov E., Musaev E. T., Physical Review D - Particles, Fields, Gravitation and Cosmology 2010 Vol. 81 P. 085010

We show that Polchinski equations in the D-dimensional matrix scalar field theory can be reduced at large N to the Hamiltonian equations in a (D+1)-dimensional theory. In the subsector of the Trϕl (for all l) operators we find the exact form of the corresponding Hamiltonian. The relation to the holographic renormalization group is discussed. ...

Added: February 27, 2013