Optimal measurement-based feedback control for a single qubit: a candidate protocol

@article{Balouchi2014OptimalMF,
  title={Optimal measurement-based feedback control for a single qubit: a candidate protocol},
  author={Ashkan Balouchi and Kurt Jacobs},
  journal={New Journal of Physics},
  year={2014},
  volume={16}
}
Feedback control of quantum systems via continuous measurement involves complex nonlinear dynamics. Except in very special cases, even for a single qubit optimal feedback protocols are unknown. Intuitive candidates do not even exist for choosing the measurement basis, which is the primary non-trivial ingredient in the feedback control of a qubit. Here we present a series of arguments that suggest a particular form for the optimal protocol for a broad class of noise sources in the regime of good… 

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