ua nt - p h / 99 03 04 2 v 1 1 1 M ar 1 99 9 An Almost - Quadratic Lower Bound for Quantum Formula Size ∗
نویسندگان
چکیده
We show that Nechiporuk’s method [14] for proving lower bound for Boolean formulas can be extended to the quantum case. This leads to an Ω(n2/ log n) lower bound for quantum formulas computing an explicit function. The only known previous explicit lower bound for quantum formulas [15] states that the majority function does not have a linear–size quantum formula.
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