Quantum scattering of light and entanglement in cold atomic clouds

• Grant number: 18/10813-2
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: February 01, 2019
• End date: March 31, 2021
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal Investigator: Celso Jorge Villas-Bôas
• Grantee: Elnaz Darsheshdar
• Host 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.

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)

MONIRI, SEYED MOSTAFA; YAVARI, HESHMATOLLAH; DARSHESHDAR, ELNAZ. Shear viscosity in the strong interaction regime of a p-wave superfluid Fermi gas. Physics Letters A, v. 400, JUN 4 2021. (18/10813-2)

MONIRI, SEYED MOSTAFA; FANI, MARJAN; DARSHESHDAR, ELNAZ. Fluorescence Spectroscopy as a Tool to Investigate the Interaction and Geometry. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, v. N/A, p. 10-pg., 2022-10-31. (18/10813-2)

DARSHESHDAR, ELNAZ; HUGBART, MATHILDE; BACHELARD, ROMAIN; VILLAS-BOAS, CELSO JORGE. Photon-photon correlations from a pair of strongly coupled two-level emitters. PHYSICAL REVIEW A, v. 103, n. 5, p. 9-pg., 2021-05-06. (18/15554-5, 18/01447-2, 19/13143-0, 18/10813-2, 19/11999-5)

MONIRI, SEYED MOSTAFA; YAVARI, HESHMATOLLAH; DARSHESHDAR, ELNAZ. Three-body and Coulomb interactions in a quasi-two-dimensional dipolar Bose-condensed gas. ANNALS OF PHYSICS, v. 438, p. 8-pg., 2022-02-09. (18/10813-2)