Voltage-controlled coded qubit based on electron spin

被引：54

作者：

Hawrylak, P ^{[1
]}

Korkusinski, M ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Microstruct Sci, Quantum Theory Grp, Ottawa, ON K1A 0R6, Canada

来源：

SOLID STATE COMMUNICATIONS | 2005年 / 136卷 / 9-10期

基金：

加拿大自然科学与工程研究理事会;

关键词：

quantum dots; quantum computation; solid-state qubit;

D O I：

10.1016/j.ssc.2005.09.026

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We design and analyze a solid-state qubit based on the electron spin and controlled by electrical means. The coded qubit is composed of a three-electron complex in three tunable gated quantum dots. The two logical states of a qubit, vertical bar 0L > and vertical bar 1L >, reside in a degenerate subspace of total spin S = 1/2 states. We demonstrate how applying voltages to specific gates changes the one-electron properties of the structure, and show how electron-electron interaction translates these changes into the manipulation of the two lowest energy states of the three-electron complex. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：508 / 512

页数：5

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