On Learning Finite-State Quantum Sources

Details On Learning Finite-State Quantum Sources On Learning Finite-State Quantum Sources

2009-10-19

arxiv.org/abs/0910.3713v1

Physics

Quantum Physics

10 pages, 1 figure

Scientific paper

We examine the complexity of learning the distributions produced by finite-state quantum sources. We show how prior techniques for learning hidden Markov models can be adapted to the quantum generator model to find that the analogous state of affairs holds: information-theoretically, a polynomial number of samples suffice to approximately identify the distribution, but computationally, the problem is as hard as learning parities with noise, a notorious open question in computational learning theory.

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