Feedback controlled dephasing and population relaxation in a two-level system

被引：0
|
作者：
Wang, Jin [1 ]
机构：
[1] Univ Tennessee, Dept Phys & Astron, Chattanooga, TN 37403 USA
来源：
PHYSICS LETTERS A | 2009年 / 373卷 / 18-19期
关键词：
DECOHERENCE-FREE SUBSPACES; ERROR-CORRECTING CODES; QUANTUM-THEORY; COMPUTATION; COHERENCE;
D O I：
10.1016/j.physleta.2009.03.026
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
This Letter presents the maximum achievable stability and purity that can be obtained in a two-level system with both dephasing and population relaxation processes by using homodyne-mediated feedback control. An analytic formula giving the optimal amplitudes of the driving and feedback for the steady-state is also presented. Experimental examples are used to show the importance of controlling the dephasing process. Published by Elsevier B.V.
引用
收藏
页码：1627 / 1631
页数：5
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