The Effect of Phonons in RbCl Quantum Pseudodot Qubits

被引：22

作者：

Sun, Yong ^{[1
]}

Ding, Zhao-Hua ^{[1
]}

Xiao, Jing-Lin ^{[1
]}

机构：

[1] Inner Mongolia Univ Nationalities, Inst Condensed Matter Phys, Tongliao 028043, Peoples R China

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2016年 / 45卷 / 07期

基金：

美国国家科学基金会;

关键词：

RbCl quantum pseudodot; qubit; probability density; oscillating period; MAGNETIC-FIELD; DOTS; POLARON; SYSTEM; STATES;

D O I：

10.1007/s11664-016-4538-x

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

By employing the Pekar variational method, the eigenenergies and eigenfunctions of the ground and first-excited states are obtained in a strong electron-longitudinal optical (LO) phonon coupling RbCl quantum pseudodot (QPD). A single qubit can be realized in this two-level quantum system. The electron probability density (EPD) oscillates in the RbCl QPD with a certain period. The investigated results show that the EPD rises with raising the chemical potential of the two-dimensional electron gas and the zero point of the pseudoharmonic potential, whereas it decays with increasing the polaron radius. However, the oscillating period (OP) possesses precisely the opposite characteristics. Through the results and analysis above, we find three ways to adjust the EPD and the OP via changing the chemical potential of the two-dimensional electron gas, the zero point of the pseudoharmonic potential, and the polaron radius.

引用

页码：3576 / 3580

页数：5

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