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Accueil > Archives > Workshop "Strongly disordered optical systems : from the white paint to cold atoms"

Workshop "Strongly disordered optical systems : from the white paint to cold atoms"


Workshop participants enjoying Cargese (click on the image to download a high-quality photo).

Final program is available here.

The workshop took place at the Institut d’Etudes Scientifiques de Cargese from 26 to 30 September 2016 and was co-organized by the GDR MesoImage and the GDR "Cold atoms".

Recent years have seen a growing interest in physics of highly disordered optical systems in which light scattering is so strong that substantial deviations from the classical transport theory can be observed. Examples of such systems are suspensions of small dielectric particles, semiconductor or dielectric powders, disordered photonic crystals, or clouds of cold atoms. The latter are particularly interesting since an almost exact description of the interaction of light with the atoms is possible. Nanoscale systems such as quantum dots, for example, also emerged in recent years. Under certain conditions, these systems behave as artificial atoms and enrich the family of physical systems where multiple scattering of light can take place. Despite their diversity, the disordered systems mentioned above allow for observation of a number of common phenomena : the backscattering cone, Anderson localization, mesoscopic fluctuations in transport properties, etc. However, other phenomena are known only in a particular context : for example, we speak of "necklace states" for waves in dielectric disordered systems and of sub- or super-radiant states for cold atoms. The complete understanding of the correspondences between similar phenomena in different systems is therefore not yet acquired.

The purpose of this workshop is to bring together researchers working in the broad domain of optics of disordered media to discuss the various aspects of this problem, the similarities and differences between similar phenomena in different systems, and the unique opportunities offered by atomic systems which can be considered as model systems controllable at will.

Main topics :
- Anderson localization of light (its existence, the conditions of its observations, the role of inelastic and nonlinear effects in the experiments)
- Collective effects in atomic systems (sub- and super-radiance)
- Role of the optical near field in multiple scattering experiments
- Role of dipole-dipole interactions in atomic systems
- Emission and scattering of light by "artificial atoms" (quantum dots) and other nanostructures
- Diffusion of light in systems with long-range spatial correlations (imperfect photonic crystals and hyperuniform structures)
- Quantum phenomena related to the quantification of the electromagnetic field or to the quantum nature of scatterers (atoms)
- Role of the internal structure of atoms (degeneration of energy levels, multi-level structure of the spectrum, etc.) in multiple light scattering
- Nonlinear phenomena that can occur in highly disordered optical systems.

Organizing committee :
- Sergey Skipetrov (LPMMC, Grenoble)
- Robin Kaiser (INLN, Nice)
- William Guerin (INLN, Nice)

Scientific committee :
- Rémi Carminati (Institut Langevin, Paris)
- Dominique Delande (LKB, Paris)
- Cord Müller (Univ. Konstanz)
- Frank Scheffold (Univ. Fribourg, Suisse)
- Bart van Tiggelen (LPMMC, Grenoble)
- Diederik Wiersma (Univ. Florence, Italie)

Speakers and tentative titles of talks :
See the program.

Application
You can apply for participation in the workshop and submit an abstract of oral or poster contribution on the web site of Cargese Institute. The Institute will take care of all practical issues (lodging in Cargese, transportation between Cargese and Ajaccio airport, etc.) so that please fill up all the information carefully during the application process.

Participation in the workshop is free of charge but you will be asked to pay for your lodging (organized by Cargese Institute) and lunches (taken at the Institute during the working days of the workshop) directly to Cargese Institute upon arrival. The cost is 266.91 Eur for staying in a double room and 328.17 Eur for staying in a single room, likely to be subject to slight variations. Please note that lodging facilities in Cargese are limited and that the Institute will not be able to satisfy lodging preferences of all participants.

We have limited funds to support participation of young researchers by covering the cost of their stay in Cargese. If you need financial support, please let us know by writing to mesoimage@grenoble.cnrs.fr. Please note that we have no funds to cover travel expenses.

Application deadline was June 30, 2016 extended to July 25, 2016. Registration is closed now.

Arrival and departure information
Accepted participants are expected to arrive to Ajaccio airport or directly to Cargese on Sunday, September 25, 2016 in the evening and to leave on Saturday, October 1, 2016 in the morning. Free transportation from/to Ajaccio airport will be organized only on these dates.

For people arriving to Ajaccio airport :
We will organize transfer to Cargese on September 25 by 2 buses. The first bus will leave to Cargese from the airport after the arrival of the flight landing at 15:10. Participants arriving before this time are supposed to take this bus. The second bus will leave after the arrival of the flight landing at 19:00. The buses will leave from the bus parking of the airport and will carry the sign of Cargese Institute (IESC). A representative of the bus company will be present in the airport building. Please try to find him at least 30 min before the departure time if you arrive in advance. It takes about an hour to reach Cargese by bus.

For people arriving to Cargese by their own means (car, etc.) :
Please be at the Institute at the arrival time of one of the buses (approx. 16:00 and 20:00, respectively). Institute’s staff will guide you to your lodging. Please note that the arrival day is Sunday and the Institute is closed. It is thus very important to be at the Institute at the time where the Institute’s staff comes in order to have a place to sleep overnight.

For people leaving Cargese before the end of the workshop :
We are not able to provide free transportation to the airport if you are leaving Cargese before October 1. However, please approach Cargese Institute’s staff to reserve a taxi because (i) the Institute will make you benefit from a reduced taxi rate and (ii) there may be another participants to share a taxi with.

Workshop poster - 1.4 Mo

Workshop program - 600.2 ko

Page créée le 4 mars 2016