Improving the purity of one- and two-qubit gates

被引:7
作者
Kohler, Sigmund [1 ]
Haenggi, Peter [1 ]
机构
[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany
来源
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS | 2006年 / 54卷 / 8-10期
关键词
quantum computation; decoherence; driven systems;
D O I
10.1002/prop.200610314
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We investigate the influence of AC driving fields on the coherence properties of one- and two-qubit gate operations. In both cases, we find that for suitable driving parameters, the gate purity improves significantly. A mapping of the time-dependent system-bath model to an effective static model provides analytical results. The resulting purity loss compares favorably with numerical results.
引用
收藏
页码:804 / 819
页数:16
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