A Fixed-Phase Quantum Search Algorithm with More Flexible Behavior

DOI: 10.4236/jqis.2012.22006   PDF   HTML     7,826 Downloads   11,183 Views   Citations


When the Grover’s algorithm is applied to search an unordered database, the probability of success usually decreases with the increase of marked items. To address this phenomenon, a fixed-phase quantum search algorithm with more flexible behavior is proposed. In proposed algorithm, the phase shifts can be fixed at the different values to meet the needs of different practical problems. If research requires a relatively rapid speed, the value of the phase shifts should be appropriately increased, if search requires a higher success probability, the value of the phase shifts should be appropriately decreased. When the phase shifts are fixed at , the success probability of at least 99.38% can be obtained in iterations.

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X. Li and P. Li, "A Fixed-Phase Quantum Search Algorithm with More Flexible Behavior," Journal of Quantum Information Science, Vol. 2 No. 2, 2012, pp. 28-34. doi: 10.4236/jqis.2012.22006.

Conflicts of Interest

The authors declare no conflicts of interest.


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