  Spin qubits are very valuable and scalable candidates in the area of quantum
computation and simulation applications. In the last decades, they have been
deeply investigated from a theoretical point of view and realized on the scale
of few devices in the laboratories. In semiconductors, spin qubits can be built
confining the spin of electrons in electrostatically defined quantum dots.
Through this approach it is possible to create different implementations:
single electron spin qubit, singlet-triplet spin qubit, or a three electrons
architecture, e. g. the hybrid qubit. For each qubit type, we study the single
qubit rotations along the principal axis of Bloch sphere including the
mandatory non-idealities of the control signals that realize the gate
operations. The realistic transient of the control signal pulses are obtained
by adopting an appropriate low-pass filter function. In addition the effect of
disturbances on the input signals is taken into account by using a Gaussian
noise model.
