TY - JOUR
AU - Kristen Parzuchowski
AU - Alexander Mikhaylov
AU - Michael Mazurek
AU - Ryan Wilson
AU - Daniel Lum
AU - Thomas Gerrits
AU - Charles Camp
AU - Martin Stevens
AU - Ralph Jimenez
AB - Excitation with entangled photon pairs may lead to an increase in the efficiency of two-photon absorption at low photon flux. The corresponding process, entangled two-photon absorption (E2PA), has been investigated in numerous theoretical and experimental studies. However, significant ambiguity and inconsistency remain in the literature about the absolute values of E2PA cross sections. Here, we use a fluorescence-based registration scheme to experimentally determine upper bounds on the cross sections for six fluorophores. These bounds are up to 4 orders of magnitude lower than the smallest published cross section. For two samples that have been studied by others, Rhodamine 6G and 9R-S, we measure upper bounds 4 and 5 orders of magnitude lower than the previously reported cross sections.
BT - Physical Review Applied
DA - 2021-04
DO - 10.1103/physrevapplied.15.044012
IS - 4
N2 - Excitation with entangled photon pairs may lead to an increase in the efficiency of two-photon absorption at low photon flux. The corresponding process, entangled two-photon absorption (E2PA), has been investigated in numerous theoretical and experimental studies. However, significant ambiguity and inconsistency remain in the literature about the absolute values of E2PA cross sections. Here, we use a fluorescence-based registration scheme to experimentally determine upper bounds on the cross sections for six fluorophores. These bounds are up to 4 orders of magnitude lower than the smallest published cross section. For two samples that have been studied by others, Rhodamine 6G and 9R-S, we measure upper bounds 4 and 5 orders of magnitude lower than the previously reported cross sections.
PB - American Physical Society (APS)
PY - 2021
EP - 044012
T2 - Physical Review Applied
TI - Setting Bounds on Entangled Two-Photon Absorption Cross Sections in Common Fluorophores
VL - 15
SN - 2331-7019
ER -