Localization of Light: Anderson and beyond

• Grant number: 23/03300-7
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2024
• End date: January 31, 2028
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Agreement: ANR
• Principal Investigator: Romain Pierre Marcel Bachelard
• Grantee: Romain Pierre Marcel Bachelard
• Principal researcher abroad: Robin Kaiser
• Institution abroad: Institut de Physique de Nice, Site Sophia-Antipolis, France
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated researchers: André Cidrim Santos
• Associated scholarship(s): 25/00266-8 - Correlations of the light in one-dimensional disordered systems, BP.IC; 24/22393-9 - Quantum comics, BP.TT; 24/12790-0 - Mean-field effects in the propagation of vectorial light in a 3D atomic cloud with diagonal disorder : study of the fluctuations, BP.TT

Abstract

Localization of light in three-dimensional disordered samples has been elusive up to date, with several initial experimental reports, followed a few years later by their re-interpretation. While absorption and nonlinear effects may be to blame for erroneous interpretations of these early experiments, later theoretical insights predict that near field dipole-dipole coupling terms in 3D actually can prevent localization. However novel elegant solutions have emerged recently, but still need to be implemented in experiments.This project addresses Anderson localization of light in cold atom systems, gathering the experimental and theoretical efforts from, respectively, the French and Brazilian partners. The first objective is to determine how to induce localization of light in atomic samples by introducing, for example, diagonal disorder or positional correlations. The second objective is to determine unambiguous signatures for localization, investigating in particular the profile of the transmitted light and the propagation of the excitations in the system. The last objective is to identify how the presence of several photons/excitations in the cloud, instead of a single one for the Anderson regime, will affect localization: This represents a first step toward the many-body regime. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ROSARIO, PEDRO; SANTOS, ALAN C.; PIOVELLA, NICOLA; KAISER, ROBIN; CIDRIM, ANDRE; BACHELARD, ROMAIN. Detecting Entanglement from Macroscopic Measurements of the Electric Field and Its Fluctuations. Physical Review Letters, v. 133, n. 5, p. 7-pg., 2024-07-31. (22/12382-4, 23/03300-7, 19/12842-2, 23/07463-8, 19/13143-0, 22/06449-9, 18/15554-5)

VILLAS-BOAS, CELSO J.; MAXIMO, CARLOS E.; PAULINO, PAULO J.; BACHELARD, ROMAIN P.; REMPE, GERHARD. Bright and Dark States of Light: The Quantum Origin of Classical Interference. Physical Review Letters, v. 134, n. 13, p. 6-pg., 2025-04-04. (18/22402-7, 22/00209-6, 17/13250-6, 19/11999-5, 23/03300-7, 18/15554-5, 23/01213-0)

MORISSE, M.; JOSHI, S.; MIKA, J.; CAPELLA, J. C. C.; KAISER, R.; BACHELARD, R.; SLODICKA, L.; HUGBART, M.. Temporal coherences of atomic chaotic light sources: The Siegert relation and its generalisation to higher-order correlation functions. EPL, v. 147, n. 1, p. 8-pg., 2024-07-01. (22/00209-6, 18/15554-5, 19/13143-0, 23/03300-7)

MAGNANI, P. H. N.; DIAS, P. G. S.; FROMETA, M.; MARTINS, M. A.; PIOVELLA, N.; KAISER, R.; COURTEILLE, PH. W.; HUGBART, M.; BACHELARD, R.; TEIXEIRA, R. C.. Breaking of reciprocity and the Pancharatnam-Berry phase for light scattered by a disordered cold-atom cloud. PHYSICAL REVIEW A, v. 110, n. 4, p. 6-pg., 2024-10-23. (13/04162-5, 23/03300-7, 18/23873-3, 22/00261-8, 19/13143-0, 18/15554-5)