References & Citations
Quantum Physics
Title: Spatial properties of entangled two-photon absorption
(Submitted on 1 Jun 2022 (v1), last revised 8 Jun 2022 (this version, v2))
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.
Submission history
From: Dmitry Tabakaev [view email][v1] Wed, 1 Jun 2022 13:56:40 GMT (397kb,D)
[v2] Wed, 8 Jun 2022 20:00:42 GMT (230kb,D)
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