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arXiv · 1211.1724

Coherent feedback that beats all measurement-based feedback protocols

Kurt Jacobs·Xiaoting Wang·Howard M. Wiseman
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Abstract

We show that when the speed of control is bounded, there is a widely applicable minimal-time control problem for which a coherent feedback protocol is optimal, and is faster than all measurement-based feedback protocols, where the latter are defined in a strict sense. The superiority of the coherent protocol is due to the fact that it can exploit a geodesic path in Hilbert space, a path that measurement-based protocols cannot follow.

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Kurt Jacobs, Xiaoting Wang, Howard M. Wiseman. 2014-07-21. Coherent feedback that beats all measurement-based feedback protocols. https://arxiv.org/abs/1211.1724

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