Spatial properties of entangled two-photon absorption
- URL: http://arxiv.org/abs/2206.00500v2
- Date: Wed, 8 Jun 2022 20:00:42 GMT
- Title: Spatial properties of entangled two-photon absorption
- Authors: D. Tabakaev, A. Djorovic, L. La Volpe, G. Gaulier, S. Ghosh, L.
Bonacina, J.-P. Wolf, H. Zbinden, R. T. Thew
- Abstract summary: We experimentally study entangled two-photon absorption in Rhodamine 6G as a function of the spatial properties of a high flux of broadband entangled photon pairs.
We demonstrate a key signature dependence of the entangled two-photon absorption rate on the type of entangled pair flux attenuation.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We experimentally study entangled two-photon absorption in Rhodamine 6G as a
function of the spatial properties of a high flux of broadband entangled photon
pairs. We first demonstrate a key signature dependence of the entangled
two-photon absorption rate on the type of entangled pair flux attenuation:
linear, when the laser pump power is attenuated, and quadratic, when the pair
flux itself experiences linear loss. We then perform a fluorescence-based
Z-scan measurement to study the influence of beam waist size on the entangled
two-photon absorption process and compare this to classical single- and
two-photon absorption processes. We demonstrate that the entangled two-photon
absorption shares a beam waist dependence similar to that of classical
two-photon absorption. This result presents an additional argument for the wide
range of contrasting values of quoted entangled two-photon absorption
cross-sections of dyes in literature.
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