Two-Photon Absorption in Molecules by time-frequency-entangled photon pairs: the roles of photon-number correlations and spectral correlations
Michael G. Raymer, Tiemo S. Landes, Markus Allgaier, Sofiane Merkouche, Brian J. Smith, Andrew H. Marcus · Conference on Lasers and Electro-Optics · 2021
Two-photon absorption is enhanced by time-frequency entanglement of photon pairs at extremely low optical flux, yet we find theoretically that for typical molecules TPA event rates are so low as to be unobservable.