  We investigate the two-proton ($2p$) emission from $^{16}$Ne with the
time-dependent $^{14}$O$+p+p$ three-body calculations. By evaluating the
survival probability, a deviation from the exponential decay is obtained,
because of the interference of the $0^{+}_1$ and the $0^+_2$ resonances. For
the $0^+_1$ resonance, the true emission of the spatially localized two protons
is dominant if the single-particle $s_{1/2}$ resonance locates above the $2p$
energy. The $0^+_2$ resonance is predicted at $\cong 2.4$ MeV from the $2p$
threshold.
