Light statistics of super-and subradiant light in cold atomic clouds

• Grant number: 21/08175-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: October 01, 2021
• End date: September 30, 2023
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal Investigator: Celso Jorge Villas-Bôas
• Grantee: João Pedro Vilela Jabur
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 18/15554-5 - Transport and localization of light in two and three dimensions, AP.JP2

Abstract

This project addresses the nature of subradiance (long-lived scattering modes) in cold atomic clouds, focusing on the statistics of the emitted light. The objective is to elaborate a test that permits to distinguish subradiance (the counterpart of superradiance, which corresponds to an accelerated emission) from radiation trapping (an incoherent phenomenon) or from (Anderson) localization of light. The candidate will investigate the statistics of the intensity in the speckle field scattered by a disordered cloud, as a tool to characterize the atomic states populated. Then, the deviations from Rayleigh law, which is valid for independent scatterers, could be used as a signature of the interactions between the atoms. (AU)