Nonlinear effects in two-mode cavity QED systems

• Grant number: 18/22402-7
• Support Opportunities: Regular Research Grants
• Duration: March 01, 2019 - November 30, 2021
• Field of knowledge: Physical Sciences and Mathematics - Physics
• Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
• Principal Investigator: Celso Jorge Villas-Bôas
• Grantee: Celso Jorge Villas-Bôas
• Principal researcher abroad: Gerhard Rempe
• Institution abroad: Technical University of Munich, Garching (TUM), Germany
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated researchers: Carlos Eduardo Máximo ; Romain Pierre Marcel Bachelard
• Associated research grant: 13/04162-5 - Development of quantum sensors based on ultracold atoms, AP.TEM

Abstract

This project aims to bring cavity QED to the next level: we will investigate the nonlinear coupling between a single atom (with different level structures such as two-level, "Lambda"- and "N"-configurations) and two distinguishable photons, achieved by strongly coupling the atom to two different optical resonator modes, thus extending the standard cavity QED scenario (with one optical mode). We will investigate high-intensity effects like four-wave mixing that can be expected already at the level of single photons per mode. We will also study phenomena with more than one photon, going beyond the results reported for very low photon numbers in [C. Hamsen et al., Nature Physics, 14, 885 (2018)]. Possible applica-tions include the nondemolition measurement of the number of photons in a given mode. The project will strongly contribute to the strengthening of the scientific collaborations between the MPQ and UFSCar groups, as well as the involvement of doctoral students and postdoctoral researchers. (AU)

Scientific publications

(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)

TOLAZZI, KARL NICOLAS; WANG, BO; IANZANO, CHRISTOPHER; NEUMEIER, JONAS; VILLAS-BOAS, CELSO JORGE; REMPE, GERHARD. Continuous quantum light from a dark atom. COMMUNICATIONS PHYSICS, v. 4, n. 1, MAR 23 2021. (18/22402-7)

VILLAS-BOAS, CELSO JORGE; TOLAZZI, KARL NICOLAS; WANG, BO; IANZANO, CHRISTOPHER; REMPE, GERHARD. Continuous Generation of Quantum Light from a Single Ground-State Atom in an Optical Cavity. Physical Review Letters, v. 124, n. 9, MAR 6 2020. (13/04162-5, 18/22402-7)