Quantum interference in femtosecond multi-photon absorption in conjugated dendrimers

Aleksander Rebane; Niklas Christensson; Mikhail Drobizhev; Yuriy Stepanenko; Charles W. Spangler

doi:10.1117/12.617308

18 August 2005 Quantum interference by femtosecond multi-photon absorption in conjugated dendrimers

Aleksander Rebane, Niklas Christensson, Mikhail Drobizhev, Yuriy Stepanenko, Charles W. Spangler

Proceedings Volume 5934, Nonlinear Optical Transmission and Multiphoton Processes in Organics III; 59340L (2005) https://doi.org/10.1117/12.617308
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We demonstrate high contrast interference fringes when near-IR frequencies and UV frequency 3ω excite fluorescence via two alternative but in practice indistinguishable quantum pathways. We use specially synthesized organic dendrimers with an exceptionally large three-photon cross section, σ₃=1.5 10^-79 cm⁶ s² based on bisdiphenylamino stilbene core and bis-diphenylamino di-styryl benzene repeat units. We show for the first time that quantum interference signal can be strong enough for being observed with an unaided eye.

Citation Download Citation

Aleksander Rebane, Niklas Christensson, Mikhail Drobizhev, Yuriy Stepanenko, and Charles W. Spangler "Quantum interference by femtosecond multi-photon absorption in conjugated dendrimers", Proc. SPIE 5934, Nonlinear Optical Transmission and Multiphoton Processes in Organics III, 59340L (18 August 2005); https://doi.org/10.1117/12.617308

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