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Portail > Offres > Offre UMR7587-CHRJAC-004 - Postdoc (H/F): propagation de la lumière en milieux complexes

Postdoc: Propagation of light in complex systems

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : vendredi 7 octobre 2022

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General information

Reference : UMR7587-CHRJAC-004
Workplace : PARIS 05
Date of publication : Friday, September 16, 2022
Type of Contract : FTC Scientist
Contract Period : 22 months
Expected date of employment : 1 November 2022
Proportion of work : Full time
Remuneration : Between 2728 euros et 3145 euros according to experience
Desired level of education : PhD
Experience required : 1 to 4 years

Missions

With the recent development of wavefront shaping techniques for light waves, a large variety of
coherent effects in disordered systems has been demonstrated and exploited. The goal of the project
is to push forward this evolution by providing a theory for the scattering matrix of strongly scattering
media made of resonant units. Although resonant materials are nowadays at the heart of atomic and
molecular physics and nanophotonics, they have not been considered in wavefront shaping protocols so
far. We propose to study the statistical properties of various operators built from the scattering matrix,
which characterize both stationary and dynamical transport features. This includes the reflection and
transmission matrices on the one hand, and the delay-time (also called Wigner-Smith) matrix and
dwell-time matrix on the other. By means of numerical and analytical methods, we aim at taking
advantage of the interplay between scattering and internal resonances to identify states and protocols
useful for imaging, energy delivery, light confinement, or information processing.

Activities

- Development of efficient numerical algorithms that compute the matrices
mentioned above for 2D and 3D resonant materials made of electro-magnetic dipoles or Mie-type
resonators, both for scalar and vector waves.
- Elaborate an analytical model or the main statistical features of these matrices, by using tools of random matrix theory.

Skills

Applicants should have a PhD in wave physics with a solid background on waves propagation in complex
systems. Specific numerical skills are welcome

Work Context

The successful candidate will be integrated to the team “Wave theory and mesoscopic physics” of the
Langevin Institute (https ://www.institut-langevin.espci.fr/waves_theory_and_mesoscopic_physics).

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