Zobrazeno 1 - 10
of 1 325
pro vyhledávání: '"Jellal, A."'
Using the Wigner function in phase space, we study quantum steering and entanglement between two coupled harmonic oscillators. We derive expressions for purity and quantum steering in both directions and identify several important selection rules. Ou
Externí odkaz:
http://arxiv.org/abs/2411.07010
Photon-assisted charge transport through a double barrier laser structure, separated by a region assisted by a magnetic field, is studied. Employing Floquet theory and matrix formalism, the transmission probabilities for the central band and sideband
Externí odkaz:
http://arxiv.org/abs/2410.13771
Autor:
Merdaci, Abdeldjalil, Jellal, Ahmed
We study entanglement in a system of three coupled quantum harmonic oscillators. Specifically, we use the Schmidt decomposition to analyze how the entanglement is distributed among the three subsystems. The Schmidt decomposition is a powerful mathema
Externí odkaz:
http://arxiv.org/abs/2409.18923
We show how the Aharonov-Bohm flux (AB) $\phi_i$ and the dual gaps $(\Delta_1, \Delta_2)$ can affect the electron scattering in graphene quantum dots (GQDs) of radius $r_0$ in the presence of an electrostatic potential $V$. After obtaining the soluti
Externí odkaz:
http://arxiv.org/abs/2409.13659
Autor:
Valentine, Nyirahafashimana, Shah, Nurisya Mohd, Halim, Umair Abdul, Husain, Sharifah Kartini Said, Jellal, Ahmed
We develop a theory based on quasi-geometric (QG) approach to transform a small number of qubits into a larger number of error-correcting qubits by considering four different cases. More precisely, we use the 2-dimensional quasi-orthogonal complete c
Externí odkaz:
http://arxiv.org/abs/2407.07562
We address the question of how the Aharonov-Bohm flux $\Phi_{AB}$ can affect the energy levels of graphene magnetic quantum dots (GMQDs) of radius $R$. To answer this question, we consider GMQDs induced by a magnetic field $B$ and subjected to two di
Externí odkaz:
http://arxiv.org/abs/2405.20186
Publikováno v:
Phys. Rev. B 109, 235434(2024)
We study an anisotropic cubic Dirac semi-metal subjected to a constant magnetic field. In the case of an isotropic dispersion in the $x$-$y$ plane, with parameters $v_{x}=v_{y}$, it is possible to find exact Landau levels, indexed by the quantum numb
Externí odkaz:
http://arxiv.org/abs/2404.17902
The electronic transport properties of two junctions (BGB, GBG) made of borophene (B) and graphene (G) are investigated. Using the transfer matrix method with Chebyshev polynomials, we have studied single and multiple barriers in a superlattice confi
Externí odkaz:
http://arxiv.org/abs/2403.19429
We consider magnetic graphene quantum dots (MGQDs) and study the impact of the Aharonov-Bohm (AB) flux and gap on the scattering process of electrons. Our emphasis is on the finite lifetimes of quasi-bound states arising from the interaction between
Externí odkaz:
http://arxiv.org/abs/2403.02206
By studying the impact of a perpendicular magnetic field $B$ on AB-bilayer graphene (AB-BLG) under dual gating, we yield several key findings for the ballistic transport of gate $U_\infty$. Firstly, we discover that the presence of $B$ leads to a dec
Externí odkaz:
http://arxiv.org/abs/2402.18399