Abstract
Markov chain Monte Carlo (MCMC) is the widely-used classical method of random sampling from a probability distribution π by simulating a Markov chain which “mixes” to π at equilibrium. Despite the success quantum walks have been shown to have in speeding up random walk algorithms for search problems (“hitting”) and simulated annealing, it remains to prove a general speedup theorem for MCMC sampling algorithms. We review the progress toward this end, in particular using decoherent quantum walks.
This material is based upon work supported by the National Science Foundation under Grant No. 0523866 and is adapted in part from the author’s PhD thesis at Rutgers University [1].
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Richter, P.C. (2008). The Quantum Complexity of Markov Chain Monte Carlo. In: Beckmann, A., Dimitracopoulos, C., Löwe, B. (eds) Logic and Theory of Algorithms. CiE 2008. Lecture Notes in Computer Science, vol 5028. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-69407-6_55
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DOI: https://doi.org/10.1007/978-3-540-69407-6_55
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