More Like this

1. Luminescent Carbazole-Based Eu ^III and Yb ^III Complexes with a High Two-Photon Absorption Cross-Section Enable Viscosity Sensing in the Visible and Near IR with One- and Two-Photon Excitation

   https://doi.org/10.1021/acs.inorgchem.9b03561  

   Monteiro, Jorge H. ; Fetto, Natalie R. ; Tucker, Matthew J. ; de Bettencourt-Dias, Ana ( March 2020 , Inorganic Chemistry)
2. Two-photon absorption and spectroscopy of the lowest two-photon transition in small donor-acceptor–substituted organic molecules

   https://doi.org/10.1103/PhysRevA.91.043818  

   Beels, Marten T. ; Biaggio, Ivan ; Reekie, Tristan ; Chiu, Melanie ; Diederich, François ( April 2015 , Physical Review A)
3. How large is the quantum enhancement of two-photon absorption by time-frequency entanglement of photon pairs

   https://doi.org/org/10.1364/OPTICA.426674  

   Raymer, M. G. ; Landes, T. ; Allgaier, M. ; Merkouche, S. ; Smith, B. J. ; Marcus, A. H. ( January 2021 , Optica)

   We present a theoretical proof that the “quantum enhancement” of two-photon absorption, thought to be a means to improve molecular spectroscopy and imaging, is tightly bounded by the physics of photonic entanglement and nonlinear response.
4. How large is the quantum enhancement of two-photon absorption by time-frequency entanglement of photon pairs?

   https://doi.org/10.1364/OPTICA.426674  

   Raymer, Michael G. ; Landes, Tiemo ; Allgaier, Markus ; Merkouche, Sofiane ; Smith, Brian J. ; Marcus, Andrew H. ( May 2021 , Optica)

   We present a theoretical proof that the “quantum enhancement” of two-photon absorption, thought to be a means to improve molecular spectroscopy and imaging, is tightly bounded by the physics of photonic entanglement and nonlinear response.
5. Experimental feasibility of molecular two-photon absorption with isolated time-frequency-entangled photon pairs

   https://doi.org/10.1103/PhysRevResearch.3.033154  

   Landes, Tiemo ; Allgaier, Markus ; Merkouche, Sofiane ; Smith, Brian J. ; Marcus, Andrew H. ; Raymer, Michael G. ( August 2021 , Physical Review Research)