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Quantum scattering of light and entanglement in cold atomic clouds

Grant number: 18/10813-2
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): February 01, 2019
Effective date (End): January 31, 2021
Field of knowledge:Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
Principal Investigator:Celso Jorge Villas-Bôas
Grantee:Elnaz Darsheshdar
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Associated research grant:13/04162-5 - Development of quantum sensors based on ultracold atoms, AP.TEM

Abstract

In this project, we investigate the quantum features of the cooperation of cold atoms in dilute clouds as they scatter light. The photons mediate a long-range interaction between the atomic dipoles, which results in various phenomena such as super- and subradiance, and coherent backscattering. These effects will here be studied in the regime of a strong driving of dilute clouds, looking for signatures of the presence of two-atom non-classical correlations in the intensity and optical coherences of the scattered light. With this we hope to be able to identify the role of the correlations between atoms like entanglement, quantum discord, or classical correlations, on the processes of light scattering. By using approximate schemes for the dynamics of quantum systems, we aim to study large systems of hundreds to thousands of particles, in order to extract the scaling laws necessary for experimental predictions.