We compute lower bounds for the exact quantum query complexity of a ternary function f. The lower bound is of order O (log3 (n)). In case f is symmetric on a sphere then the lower bound is of order O (n). This work is a natural continuation of the work of Beals, Buhrman, Cleve, Mosca, and de Wolf on lower limits for binary functions.
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|State||Published - 28 Feb 2008|