Dynamically corrected gates for an exchange-only qubit

被引：27

作者：

Hickman, G. T. ^{[1
]}

Wang, Xin ^{[2
]}

Kestner, J. P. ^{[1
,2
]}

Das Sarma, S. ^{[2
]}

机构：

[1] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA

[2] Univ Maryland, Dept Phys, Condensed Matter Theory Ctr, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW B | 2013年 / 88卷 / 16期

关键词：

SINGLE-ELECTRON SPIN; QUANTUM-DOT; OSCILLATIONS;

D O I：

10.1103/PhysRevB.88.161303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We provide analytical composite pulse sequences that perform dynamical decoupling concurrently with arbitrary rotations for a qubit coded in the spin state of a triple quantum dot. The sequences are designed to respect realistic experimental constraints such as strictly nonnegative couplings. Logical errors and leakage errors are simultaneously corrected. A short pulse sequence is presented to compensate nuclear noise and a longer sequence is presented to simultaneously compensate nuclear and charge noise. The capability developed in this work provides a clear prescription for combatting the relevant sources of noise that currently hinder exchange-only qubit experiments.

引用

页数：5

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