Charge-qubit operation of an isolated double quantum dot

被引：338

作者：

Gorman, J ^{[1
]}

Hasko, DG

Williams, DA

机构：

[1] Univ Cambridge, Ctr Microelect Res, Cambridge CB3 0HE, England

[2] Hitachi Europe Ltd, Hitachi Cambridge Lab, Cambridge CB3 0HE, England

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.95.090502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated coherent time evolution of pseudomolecular states of an isolated (leadless) silicon double quantum dot, where operations are carried out via capacitively coupled elements. Manipulation is performed by short pulses applied to a nearby gate, and measurement is performed by a single-electron transistor. The electrical isolation of this qubit results in a significantly longer coherence time than previous reports for semiconductor charge qubits realized in artificial molecules.

引用

页数：4

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