• Corpus ID: 119351315

Accurate quantum state estimation via "Keeping the experimentalist honest"

@article{BlumeKohout2006AccurateQS,
  title={Accurate quantum state estimation via "Keeping the experimentalist honest"},
  author={Robin Blume-Kohout and Patrick M. Hayden},
  journal={arXiv: Quantum Physics},
  year={2006}
}
In this article, we derive a unique procedure for quantum state estimation from a simple, self-evident principle: an experimentalist's estimate of the quantum state generated by an apparatus should be constrained by honesty. A skeptical observer should subject the estimate to a test that guarantees that a self-interested experimentalist will report the true state as accurately as possible. We also find a non-asymptotic, operational interpretation of the quantum relative entropy function. 
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