Implementation of quantum gates via optimal control

被引：23
作者：
Schirmer, Sonia [1 ,2 ]
机构：
[1] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England
[2] Univ Kuopio, Dept Math & Stat, FIN-70211 Kuopio, Finland
来源：
JOURNAL OF MODERN OPTICS | 2009年 / 56卷 / 06期
基金：
英国工程与自然科学研究理事会;
关键词：
quantum control theory; quantum computation; physically-realistic control system models; implementation of quantum gates;
D O I：
10.1080/09500340802344933
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Starting with the basic control system model often employed in nuclear magnetic resonance pulse design, we derive more realistic control system models taking into account effects such as off-resonant excitation for systems with fixed inter-qubit coupling controlled by globally applied electromagnetic fields, as well as for systems controlled by a combination of a global fields and local control electrodes. For both models optimal control is used to find controls that implement a set of two- and three-qubit gates with fidelity of at least 99.99%.
引用
收藏
页码：831 / 839
页数：9
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