Abstract
Every Boolean function can be presented as a logical formula in conjunctive normal form. Fast algorithm for conjunction plays significant role in overall algorithm for computing arbitrary Boolean function. First, we present a quantum query algorithm for conjunction of two bits. Our algorithm uses one quantum query and correct result is obtained with a probability pā=ā4/5, that improves the previous result. Then, we present the main result - generalization of our approach to design efficient quantum algorithms for computing conjunction of two Boolean functions. Finally, we demonstrate another kind of an algorithm for conjunction of two bits, that has a correct answer probability pā=ā9/10. This algorithm improves success probability by 10%, but stands aside and cannot be extended to compute conjunction of Boolean functions.
This research was supported by Grant No. 09.1570 from the Latvian Council of Science and by Project Nr. 2009/0138/1DP/1.1.2.1.2/09/IPIA/VIAA/004 from the European Social Fund.
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Vasilieva, A., Mischenko-Slatenkova, T. (2010). Quantum Query Algorithms for Conjunctions. In: Calude, C.S., Hagiya, M., Morita, K., Rozenberg, G., Timmis, J. (eds) Unconventional Computation. UC 2010. Lecture Notes in Computer Science, vol 6079. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-13523-1_16
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DOI: https://doi.org/10.1007/978-3-642-13523-1_16
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