  The dynamics of a two-dimensional superconductor under a constant electric
field $E$ is studied by using the gauge/gravity correspondence. The pair
breaking current induced by $E$ first increases to a peak value and then
decreases to a constant value at late time, where the superconducting gap goes
to zero, corresponding to a normal conducting phase. The peak value of the
current is found to increase linearly with respect to the electric field.
Moreover, the nonlinear conductivity, defined as an average of the conductivity
in the superconducting phase, scales as $\sim E^{-2/3}$ for large $E$ when the
system is close to the critical temperature, which agrees with predictions from
solving the time dependent Ginzburg-Landau equation.
