multilevel quantum system
Recently Published Documents


TOTAL DOCUMENTS

15
(FIVE YEARS 1)

H-INDEX

7
(FIVE YEARS 0)

Entropy ◽  
2021 ◽  
Vol 23 (1) ◽  
pp. 99
Author(s):  
Vladimir Akulin

In the framework of an exactly soluble model, one considers a typical problem of the interaction between radiation and matter: the dynamics of population in a multilevel quantum system subject to a time dependent perturbation. The algebraic structure of the model is taken richly enough, such that there exists a strong argument in favor of the fact that the behavior of the system in the asymptotic of long time has a universal character, which is system-independent and governed by the functional property of the time dependence exclusively. Functional properties of the excitation time dependence, resulting in the regimes of resonant excitation, random walks, and dynamic localization, are identified. Moreover, an intermediate regime between the random walks and the localization is identified for the polyharmonic excitation at frequencies given by the Liouville numbers.





2016 ◽  
Vol 93 (8) ◽  
Author(s):  
J. P. Lee ◽  
A. J. Bennett ◽  
J. Skiba-Szymanska ◽  
D. J. P. Ellis ◽  
I. Farrer ◽  
...  


2007 ◽  
Vol 111 (38) ◽  
pp. 9446-9453 ◽  
Author(s):  
M. Sugawara ◽  
M. Tamaki ◽  
S. Yabushita


2004 ◽  
Vol 93 (18) ◽  
Author(s):  
J. Claudon ◽  
F. Balestro ◽  
F. W. J. Hekking ◽  
O. Buisson


2001 ◽  
Vol 16 (31) ◽  
pp. 5007-5032 ◽  
Author(s):  
E. ERCOLESSI ◽  
G. MARMO ◽  
G. MORANDI ◽  
N. MUKUNDA

We analyze the geometric aspects of unitary evolution of general states for a multilevel quantum system by exploiting the structure of coadjoint orbits in the unitary group Lie algebra. Using the same methods in the case of SU(3) we study the effect of degeneracies on geometric phases for three-level systems. This is shown to lead to a highly nontrivial generalization of the result for two-level systems in which degeneracy results in a "monopole" structure in parameter space. The rich structures that arise are related to the geometry of adjoint orbits in SU(3). The limiting case of a two-level degeneracy in a three-level system is shown to lead to the known monopole structure.



1990 ◽  
Vol 93 (12) ◽  
pp. 8939-8944 ◽  
Author(s):  
S. Velasco ◽  
J. A. White ◽  
A. Calvo Hernández


Sign in / Sign up

Export Citation Format

Share Document