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Performing fully parallel constraint logic programming on a quantum annealer

Published online by Cambridge University Press:  06 May 2018

SCOTT PAKIN Open the ORCID record for SCOTT PAKIN [Opens in a new window]
SCOTT PAKIN*
Affiliation:
Computer, Computational, and Statistical Sciences Division, Los Alamos National Laboratory, MS B287, Los Alamos, New Mexico, USA (e-mail: pakin@lanl.gov)
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Abstract

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A quantum annealer exploits quantum effects to solve a particular type of optimization problem. The advantage of this specialized hardware is that it effectively considers all possible solutions in parallel, thereby potentially outperforming classical computing systems. However, despite quantum annealers having recently become commercially available, there are relatively few high-level programming models that target these devices. In this article, we show how to compile a subset of Prolog enhanced with support for constraint logic programming into a two-local Ising-model Hamiltonian suitable for execution on a quantum annealer. In particular, we describe the series of transformations one can apply to convert constraint logic programs expressed in Prolog into an executable form that bears virtually no resemblance to a classical machine model yet that evaluates the specified constraints in a fully parallel manner. We evaluate our efforts on a 1,095-qubit D-Wave 2X quantum annealer and describe the approach's associated capabilities and shortcomings.

Keywords

quantum annealingquantum computingconstraint logic programmingPrologD-Wave
Type
Original Article
Information
Theory and Practice of Logic Programming , Volume 18 , Special Issue 5-6: Special Issue on Parallel and Distributed Logic Programming , September 2018 , pp. 928 - 949
Copyright
Copyright © Cambridge University Press 2018 

Footnotes

*This work was supported by Laboratory Directed Research and Development (LDRD) funding at Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Los Alamos National Security LLC for the US Department of Energy under contract DE-AC52-06NA25396.

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