Bound magneto-polaron in triangular quantum dot qubit under an electric field

被引：11

作者：

Fotue, A. J. ^{[1
]}

Issofa, N. ^{[1
]}

Tiotsop, M. ^{[1
]}

Kenfack, S. C. ^{[1
]}

Djemmo, M. P. Tabue ^{[1
,3
]}

Wirngo, A. V. ^{[1
]}

Fotsin, H. ^{[2
]}

Fai, L. C. ^{[1
]}

机构：

[1] Univ Dschang, Fac Sci, Dept Phys, Mesoscop & Multilayers Struct Lab, POB 479, Dschang, Cameroon

[2] Univ Dschang, Fac Sci, Dept Phys, Lab Elect & Signal Proc, POB 67, Dschang, Cameroon

[3] Univ Dschang, Fac Sci, Lab Mech & Modeling Phys Syst, POB 67, Dschang, Cameroon

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2016年 / 90卷

关键词：

Polaron; Quantum dot; Electromagnetic field; Pekar type variational method; IMPURITY MAGNETOPOLARON; POLARON; STATES; DECOHERENCE;

D O I：

10.1016/j.spmi.2015.11.036

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper, we examine the time evolution of the quantum mechanical state of a magnetopolaron using the Pekar type variational method on the electric-LO-phonon strong coupling in a triangular quantum dot with Coulomb impurity. We obtain the Eigen energies and the Eigen functions of the ground state and the first excited state, respectively. This system in a quantum dot is treated as a two-level quantum system qubit and numerical calculations are done. The Shannon entropy and the expressions relating the period of oscillation and the electron-LO-phonon coupling strength, the Coulomb binding parameter and the polar angle are derived. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：20 / 29

页数：10

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