  We study single and double quantum dots defined electrostatically within
silicene. The spin-valley structure of the confined single- and two-electron
system is determined and the effects of the intervalley scattering induced by
the crystal edge and the Coulomb interaction are quantified. The states in a
double quantum system are discussed in the context of the spatial symmetry of
the single- and two-electron extended orbitals. We determine the charge, spin
and valley transitions times induced by alternate electric fields of the
microwave frequency. The valley transition times can be controlled by several
orders of magnitude by the confinement potential. Also, the spin transition
rates can be enhanced by orders of magnitude by the coupling of the bonding and
antibonding orbitals mediated by the Rashba interaction.
