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Confinement is a process by which particles with fractional quantum numbers bind together to form quasiparticles with integer quantum numbers. The constituent particles are confined by an attractive interaction whose strength increases with…

Theoretical analysis of the experimental data for the energy levels of two interacting electrons confined by a finite Gaussian potential in a 2D quantum dot and subjected to a uniform magnetic field perpendicular to the plane of the dot is…

介观与纳米尺度物理 · 物理学 2022-07-27 S. Chaudhuri

We use magnetotunnelling spectroscopy as a non-invasive probe to produce two-dimensional spatial images of the probability density of an electron confined in a self-assembled semiconductor quantum dot. The images reveal clearly the…

The spin-dependent scattering process in a system of topological insulator and quantum dot is studied. The unitary scattering process is viewed as a gate transformation applied to an initial state of two electrons. Due to the randomness…

Using Schr\"{o}dinger's formalism, we investigate the quantum eigenstates of the heavy mesons trapped by a point-like defect and by Cornell's potential. One implements this defect to the model considering a spherical metric profile coupled…

高能物理 - 唯象学 · 物理学 2023-03-14 C. A. S. Almeida , C. O. Edet , F. C. E. Lima , N. Ali , M. Asjad

Theoretical methods for empirical state determination of entangled two-level systems are analyzed in relation to information theory. We show that hidden variable theories would lead to a Shannon index of correlation between the entangled…

量子物理 · 物理学 2007-05-23 Y. Ben-Aryeh , A. Mann , B. C. Sanders

We study a two-dimensional system of two Coulombically interacting electrons in an external harmonic confining potential. More precisely, we present calculations for the singlet ground-state of the system. We explain the nature of the…

量子物理 · 物理学 2017-07-17 Przemyslaw Koscik

We study the problem of an electron in two dimensions in the presence of a magnetic vortex with a step-like profile. Dependending on the values of the effective mass and gyromagnetic factor of the electron, it may be trapped by the vortex.…

凝聚态物理 · 物理学 2008-11-26 R. M. Cavalcanti , E. S. Fraga , C. A. A. de Carvalho

In this paper, we studied, at first, the influence of the energy-dependent potentials on the one-dimensionless Klein-Gordon oscillator. Then, the Shannon entropy and Fisher information of this system are investigated. The position and…

量子物理 · 物理学 2018-04-04 Abdelmalek Boumali , Malika Labidi

Using Single Electron Capacitance Spectroscopy, we study electron additions in quantum dots containing two potential minima separated by a shallow barrier. Analysis of addition spectra in magnetic field allows us to distinguish whether…

介观与纳米尺度物理 · 物理学 2010-03-12 M. Brodsky , N. B. Zhitenev , R. C. Ashoori , L. N. Pfeiffer , K. W. West

We study the two dimensional system influenced by a non-central potential consisting of a Kratzer potential with a dipole moment, along with a vector potential of the Aharonov-Bohm (AB) effect. We explore various information theoretic…

量子物理 · 物理学 2024-12-25 Ahmed Becir , Mustafa Moumni

We investigate theoretically the combined effects of the electron-electron and the Rashba spin-orbit interactions on two electrons confined in quasi-one-dimensional AlInSb-based double quantum dots. We calculate the two-electron wave…

介观与纳米尺度物理 · 物理学 2015-05-13 C. L. Romano , P. I. Tamborenea , S. E. Ulloa

Highly accurate quantum electron dynamics calculations demonstrate that energy can be efficiently transferred between quantum dots. Specifically, in a double quantum dot an incoming electron is captured by one dot and the excess energy is…

介观与纳米尺度物理 · 物理学 2015-06-16 Federico M. Pont , Annika Bande , Lorenz S. Cederbaum

We propose a scheme for detecting entanglement between two electron spin qubits in a double quantum dot using an entanglement witness operator. We first calculate the optimal configuration of the two electron spins, defined as the position…

介观与纳米尺度物理 · 物理学 2012-02-28 A. Borras , M. Blaauboer

We analyze the effects of electron-electron and electron-phonon interactions in the dynamics of a system of two or three electrons that can be trapped to a localized state and detrapped to ab extended band states of a quantum dot using a…

介观与纳米尺度物理 · 物理学 2025-12-11 R. Carmina Monreal

Entanglement is one of the most fascinating concepts of modern physics. In striking contrast to its abstract, mathematical foundation, its practical side is, however, remarkably underdeveloped. Even for systems of just two orbitals or sites…

量子物理 · 物理学 2022-07-08 Lexin Ding , Zoltan Zimboras , Christian Schilling

In this paper, we present a new multi-scale information content calculation method based on Shannon information (and Shannon entropy). The original method described by Claude E. Shannon and based on the logarithm of the probability of…

信息论 · 计算机科学 2023-05-23 Zsolt Pocze

Control over electron-spin states, such as coherent manipulation, filtering and measurement promises access to new technologies in conventional as well as in quantum computation and quantum communication. We review our proposal of using…

介观与纳米尺度物理 · 物理学 2015-06-24 Guido Burkard , Hans-Andreas Engel , Daniel Loss

We explore the three-particle spin model of an $S_{1}=\frac{1}{2}$ particle (e.g. a stationary electron) interacting with two spin-coupled $S_{\text{2,3}}$ particles with exchange coupling and magnetic anisotropy. We find that in the case…

量子物理 · 物理学 2021-12-02 Eric D. Switzer , Xiao-Guang Zhang , Talat S. Rahman

In this work, the probability uncertainties related to a stationary quantum system with solitonic mass distribution when subjected to deformable hyperbolic potentials are studied. Shannon's entropy and Fisher's information of a…

量子物理 · 物理学 2022-06-08 F. C. E. Lima
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