Tree search and quantum computation

  • Authors:
  • Luís Tarrataca;Andreas Wichert

  • Affiliations:
  • GAIPS/INESC-ID, Lisbon, Portugal and Department of Computer Science, Instituto Superior Técnico, Technical University of Lisbon, Porto Salvo, Portugal 2780-990;GAIPS/INESC-ID, Lisbon, Portugal and Department of Computer Science, Instituto Superior Técnico, Technical University of Lisbon, Porto Salvo, Portugal 2780-990

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2011

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Abstract

Traditional tree search algorithms supply a blueprint for modeling problem solving behaviour. A diverse spectrum of problems can be formulated in terms of tree search. Quantum computation, namely Grover's algorithm, has aroused a great deal of interest since it allows for a quadratic speedup to be obtained in search procedures. In this work we consider the impact of incorporating classical search concepts alongside Grover's algorithm into a hybrid quantum search system. Some of the crucial points examined include: (1) the reverberations of contemplating the use of non-constant branching factors; (2) determining the consequences of incorporating an heuristic perspective into a quantum tree search model.