  Many quantum control problems are formulated as a search for an optimal field
that maximizes a physical objective. This search is performed over a landscape
defined as the objective as a function of the control field. A recent Letter
[A. N. Pechen and D. J. Tannor, Phys. Rev. Lett. 106, 120402 (2011)] asserts
that the existence of special landscape critical points (CPs) with trapping
characteristics is "contrary to recent claims in the literature" and "can have
profound implications for both theoretical and experimental quantum control
studies." We show here that these assertions are inaccurate and misleading.
