• Corpus ID: 244896433

Classical computation of quantum guesswork

@article{DallArno2021ClassicalCO,
  title={Classical computation of quantum guesswork},
  author={Michele Dall’Arno and Francesco Buscemi and Takeshi Koshiba},
  journal={ArXiv},
  year={2021},
  volume={abs/2112.01666}
}
The guesswork quantifies the minimum number of queries needed to guess the state of a quantum ensemble if one is allowed to query only one state at a time. Previous approaches to the computation of the guesswork were based on standard semi-definite programming techniques and therefore lead to approximated results. In contrast, our main result is an algorithm that, upon the input of any qubit ensemble over a discrete ring and with uniform probability distribution, after finitely many steps… 

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References

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TLDR
This work takes Massey's guesswork as the underlying optimization criterion and studies the problem of minimum guesswork discrimination in discriminating non-orthogonal quantum states, and gives the necessary and sufficient condition under which making no measurement at all would be the optimal strategy.
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