  We propose nearly-optimal control strategies for changing states of a quantum
system. We argue that quantum control optimization can be studied analytically
within some protocol families that depend on a small set of parameters for
optimization. This optimization strategy can be preferred in practice because
it is physically transparent and does not lead to combinatorial complexity in
multistate problems. For demonstration, we design optimized control protocols
that achieve switching between orthogonal states of a naturally biased quantum
two-level system.
