Feedback control using only quantum back-action
Feedback control using only quantum back-action
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DOI：
10.1088/1367-2630/12/4/043005
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发表时间：
2010-04-01
影响因子：
3.3
通讯作者：
Jacobs, Kurt
中科院分区：
文献类型：
--
作者：
Jacobs, Kurt
传统的反馈控制方法是通过修改哈密顿量来对系统施加确定性力。在这里，我们表明，有限维量子系统可以控制纯粹利用随机量子反作用的连续弱测量。我们证明了，非常值得注意的是，这种自适应测量的量子反作用在控制量子系统方面与传统反馈一样有效。
The traditional approach to feedback control is to apply deterministic forces to a system by modifying the Hamiltonian. Here we show that finite-dimensional quantum systems can be controlled purely by exploiting the random quantum back-action of a continuous weak measurement. We demonstrate that, quite remarkably, the quantum back-action of such an adaptive measurement is just as effective at controlling quantum systems as traditional feedback.