  A dynamical nuclear polarization scheme is studied in gated double dots. We
demonstrate that a small polarization ($\sim 0.5%$) is sufficient to enhance
the singlet decay time by two orders of magnitude. This enhancement is
attributed to an equilibration process between the nuclear reservoirs in the
two dots accompanied by reduced fluctuations in the Overhauser fields, that are
mediated by the electron-nuclear spin hyperfine interaction.
