Quantum algorithm for the asymmetric weight decision problem and its generalization to multiple weights

  • Authors:
  • Byung-Soo Choi;Samuel L. Braunstein

  • Affiliations:
  • Department of Electronics Engineering, Ewha Womans University, Seoul, Republic of Korea (South Korea);Department of Computer Science, University of York, York, United Kingdom YO10 5DD

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

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Abstract

As one of the applications of Grover search, an exact quantum algorithm for the symmetric weight decision problem of a Boolean function has been proposed recently. Although the proposed method shows a quadratic speedup over the classical approach, it only applies to the symmetric case of a Boolean function whose weight is one of the pair {0 w 1 w 2 w 1 + w 2 = 1}. In this article, we generalize this algorithm in two ways. Firstly, we propose a quantum algorithm for the more general asymmetric case where {0 w 1 w 2 w 1 w 2 w m