The effect of the push pulse can thus be summarised as projecting the 2 1 Agwavefunction into a manifold of spatially separated triplet-pairs by using an optical perturbation that selectively couples the triplet-pair amplitudes of the 2 1 Agwavefunction to the 1 (TT)* excited states, and their decay pathways towards nearly-free entangled triplet-pairs. Not only does this show how triplet-pairs can be harvested with low energy photons from non-luminescent polymers, it also provides a type of analysis of the total triplet character in the many-body 2 1 Agstate, as well as the possibility to study real-time, real-space triplet motion in an organic material. In fact, as ultrafast time-resolved microscopy is rapidly emerging as a viable experimental techniques 80 , it may even become possible in the near future to observe and manipulate the individual triplets in the nearly-free pairs. Push-induced dynamics of PDA with push pulse centred at 940 nm and tpush of 400 fs. The negative signals indicate that the effect of the push is to increase the 'hot' ground state and 2 1 Agpopulations. c. Push-induced response of the 2 1 Agstate when pushing at 400 fs. The 2 1 Aglifetime is increased to 15 ± 0.1 ps in this case. d. Comparison of decay (circles; solid line fit) for spectral region associated with the 2 1 Agstate in pumpprobe measurements, and 2 1 Agand 'hot' ground state in pump-push-probe experiments (tpush = 200 fs; mapped back to single scale where all pulses arrive at t = 0 fs). The PIA associated with 2 1 Agrapidly decays in pump-probe experiments; application of the push however enhances the lifetime of this PIA by at least one order of magnitude. e. Spectral cuts of pump-push-probe spectrum. The 'hot' ground state and 2 1 Ag -PIAs are present almost immediately after the push pulse with the latter being slightly delayed. The **data** is shown for tpush = 400 fs, with the times in the legends indicating the pump-probe delay. f. Magnification of the spectral region associated with the pushed 2 1 Ag -PIA; the spectra are normalised at 900 nm. Dashed overlay is a fit of two Gaussians to the profile (see SI, Figure S10 for further details) and highlights the narrowing of the spectrum at longer time delays following the push.