Feedback control of nonlinear quantum systems: a rule of thumb.
نویسندگان
چکیده
We show that in the regime in which feedback control is most effective - when measurements are relatively efficient, and feedback is relatively strong - then, in the absence of any sharp inhomogeneity in the noise, it is always best to measure in a basis that does not commute with the system density matrix than one that does. That is, it is optimal to make measurements that disturb the state one is attempting to stabilize.
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ورودعنوان ژورنال:
- Physical review letters
دوره 99 2 شماره
صفحات -
تاریخ انتشار 2007