Figure 1

Pump-probe spectroscopy of dynamical pair correlations: A pump pulse excites population from the electronic ground state, leaving the pair correlation function in a nonstationary state, the hole. A time-delayed probe pulse monitors the dynamics of the hole. The orange peaks indicate the region where the probe pulse measures pair amplitude.Reuse & Permissions

Figure 2

Probing the two-body correlation dynamics: Absorption of the probe pulse as a function of the delay between pump and probe pulses. The pump pulse detunings are ${\Delta }_L=-4.0{\mathrm{cm}}^{-1}$ (a) and ${\Delta }_L=-14{\mathrm{cm}}^{-1}$ (b), and three different pump pulse energies are shown.Reuse & Permissions

Figure 3

Spectra of the transient absorption signals shown in Fig. 2. The eigenergies of the interaction potential are recovered: Black arrows indicate the position of the binding energies of the triplet (upper row) and singlet (lower row) levels, grey arrows half-multiples of the binding energies. The spectra for 23.5 nJ (blue solid lines) are scaled down by a factor of 2.Reuse & Permissions

Figure 4

Absorption of the probe pulse as a function of the delay between pump and probe pulses comparing pure state dynamics (black solid lines) to those of a thermal ensemble (colored broken lines). (a) Calculation including two scattering channels (singlet and triplet): The thermal dynamics are dominated by a singlet shape resonance while the pure dynamics shows features of both singlet and triplet dynamics. (b) Calculation for a single channel (triplet): The thermal and pure state dynamics are similar with the recovery of the bleach smeared out at higher temperatures. (${\Delta }_L=-4.0{\mathrm{cm}}^{-1}$, ${\mathcal{E}}_P=3.8\mathrm{nJ}$).Reuse & Permissions