  Utilizing time-evolution techniques in (infinite) matrix-product-state
representation, we study the non-equilibrium dynamics of driven Mott insulators
and demonstrate photoinduced $\eta$ pairing directly in the thermodynamic
limit. Analyzing the time evolution of the corresponding pairing correlations,
we determine the optimal laser pump parameters for which long-range
$\eta$-pairing becomes dominant after pulse irradiation. The time-dependent
photoemission spectra for this optimal pump parameter set show clear signatures
of the photoinduced insulator-to-metal phase transition related to the
formation of $\eta$ pairs.
