  We present the theoretical basis for and experimental verification of
arbitrary single-qubit state generation, using the polarization of photons
generated via spontaneous parametric downconversion. Our precision measurement
and state reconstruction system has the capability to distinguish over 3
million states, all of which can be reproducibly generated using our state
creation apparatus. In order to complete the triumvirate of single qubit
control, there must be a way to not only manipulate single qubits after
creation and before measurement, but a way to characterize the manipulations
\emph{themselves}. We present a general representation of arbitrary processes,
and experimental techniques for generating a variety of single qubit
manipulations, including unitary, decohering, and (partially) polarizing
operations.
