Utilizing time-evolution techniques in (infinite) matrix-product-state representation, we study the non-equilibrium dynamics of driven Mott insulators and demonstrate photoinduced η 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 η-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 η pairs.
Cite
@article{arxiv.2301.04496,
title = {Photoinduced pairing in Mott insulators},
author = {Satoshi Ejima and Holger Fehske},
journal= {arXiv preprint arXiv:2301.04496},
year = {2026}
}