Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Ivanchenko, E. A."'
Autor:
Ivanchenko, E. A.
Publikováno v:
Journal-ref: Physics Letters A 381, 3880 (2017)
A visualization for dynamics of a qudit spin vector in a time-dependent magnetic field is realized by means of mapping a solution for a spin vector on the three-dimensional spherical curve (vector hodograph). The obtained results obviously display th
Externí odkaz:
http://arxiv.org/abs/1608.08537
Autor:
Ivanchenko, E. A.
Publikováno v:
PHYS. REV. E 92, 032124 (2015)
Properties of the coupled particles with spin 3/2 (quartits) in a constant magnetic field, as a working substance in the quantum Otto cycle of the heat engine, are considered. It is shown that this system as a converter of heat energy in work (i) sho
Externí odkaz:
http://arxiv.org/abs/1412.7171
Autor:
Ivanchenko, E. A.
A visualization scheme for dynamics of a qudit polarization vector in a time-dependent magnetic field is presented by solving equations for a density matrix in Hermitian basis. This is realized by means of mapping solution for the polarization vector
Externí odkaz:
http://arxiv.org/abs/1311.2537
Autor:
Ivanchenko, E. A.
Publikováno v:
International Journal of Quantum Information Vol. 10, No. 6 (2012) 1250068 (13 pages)
Based on the Liouville-von Neumann equation, we obtain a closed system of equations for the description of a qutrit or coupled qutrits in an arbitrary, time-dependent, external magnetic field. The dependence of the dynamics on the initial states and
Externí odkaz:
http://arxiv.org/abs/1302.0105
Autor:
Ivanchenko, E. A.
Based on the Liouville-von Neumann equation, we obtain closed system of equations for the description of a qutrit or coupled qutrits in arbitrary time-dependent external magnetic field. The dependence of the dynamics on the initial states and magneti
Externí odkaz:
http://arxiv.org/abs/1106.2297
Autor:
Ivanchenko, E. A.
Publikováno v:
Journal of Mathematical physics, v. 50,042704 (2009)
A closed system of equations for the local Bloch vectors and spin correlation functions of three magnetic qudits, which are in an arbitrary, time-dependent, external magnetic field, is obtained using decomplexification of the Liouville-von Neumann eq
Externí odkaz:
http://arxiv.org/abs/0904.3533
Autor:
Ivanchenko, E. A.
Publikováno v:
Condens. Matter Phys., 2011, vol. 14, No. 2, 23005:1-12
A closed system of the equations for the local Bloch vectors and spin correlation functions is obtained by decomplexification of the Liouville-von Neumann equation for 4 magnetic particles with the exchange interaction that takes place in an arbitrar
Externí odkaz:
http://arxiv.org/abs/0901.3637
Autor:
Ivanchenko, E. A.
he analytic formulas for structure constants of $su(2S+1)$ algebra in terms of $3jm$ and $6j$ symbols of $su(2)$ have been derived for the decomplexification of the Liouville-von Neumann equation.
Comment: 7 pages
Comment: 7 pages
Externí odkaz:
http://arxiv.org/abs/0807.2992
Autor:
Ivanchenko, E. A.
A closed system of the equations for the local Bloch vectors and spin correlation functions is obtained by decomplexification of the Liouville-von Neumann equation for three magnetic qubits with the exchange interaction, that takes place in an arbitr
Externí odkaz:
http://arxiv.org/abs/quant-ph/0610176
Autor:
Ivanchenko, E. A.
Publikováno v:
Physica B 358 (2005) 308-313
The behaviour of a particle with a spin 1/2 and a dipole magnetic moment in a time-varying magnetic field in the form $(h_0 cn(\omega t,k), h_0 sn(\omega t,k), H_0 dn(\omega t,k))$, where $\omega$ is the driving field frequency, $t$ is the time, $h_0
Externí odkaz:
http://arxiv.org/abs/quant-ph/0404114