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S. Rotter:
"Optimal states of light in disordered media: indestructible light beams and maximum information states";
Vortrag: Colloquium talk at TU Graz, Graz (eingeladen); 14.12.2021.

In my talk I will present recent advances in designing tailor-made
states of light with optimal properties in scattering across highly disordered
media. First, I will present so-called "scattering-invariant modes"; these light
fields have the unique property that they are transmitted across a disordered
medium with the same output profile as when travelling through free space
[1]. In a second part, I will discuss how the concept of Fisher information
allows us to distill from the measurable scattering matrix of a system the
unique state of light, which delivers the maximum amount of information
about a desired system parameter of interest to an external observer [2]. Both
of these concepts were recently implemented together with the group of Allard
Mosk in Utrecht using optical wave-front shaping tools.
[1] P. Pai, J. Bosch, M. Kühmayer, S. Rotter, and A. P. Mosk, Nature Photonics
15, 431 (2021)
[2] D. Bouchet, S. Rotter, and A. P. Mosk, Nature Physics 17, 564 (2021)

https://www.if.tugraz.at/workshops/abstracts.php?245