Photonic quantum dot interaction

• Grant number: 20/00725-9
• Support Opportunities: Regular Research Grants
• Start date: September 01, 2021
• End date: August 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Agreement: Swedish Research Council (VR)
• Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
• Principal Investigator: Romain Pierre Marcel Bachelard
• Grantee: Romain Pierre Marcel Bachelard
• Principal researcher abroad: Ana Predojevic
• Institution abroad: Stockholm University , Sweden
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• City of the host institution: São Carlos
• Associated researchers: Celso Jorge Villas-Bôas
• Associated research grant: 19/13143-0 - Cold atoms, photons, and quantum correlations, AP.R

Abstract

This proposal aims at two parallel sets of activities in research and higher education that will be carried out by team of experimentalists and theorists from Sweden and Brazil. The main research topic is tightly bound to quantum technologies and addresses the use of quantum dots for quantum communication and simulation. In particular, we will employ light-mediated interaction between quantum dots to manipulate and engineer the emission of the photons. The coupling between quantum emitters has the potential to generate entanglement, which in turn allows one to tune the optical coherence of the radiated light. Considering that quantum dots are among the most promising sources of single photons and entangled photon pairs, the project holds great promise to path the way to understanding of a system that can be used for both fundamental research and technological applications. This project gathers the theorists from São Carlos that have a strong expertise in atomic systems and light-mediated interactions, and the experimentalists from Stockholm who work with quantum dots coupled to optical cavities. By bringing together the analytical and numerical tools and knowledge from atomic systems to the experimental setup of quantum dots, the collaboration promises a rich cross-fertilization of fields and an intense exchange of ideas. The funding is requested for several research visits between the applicants. (AU)

Scientific publications

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

SANTOS, ALAN C.; SCHNEIDER, CHRISTIAN; BACHELARD, R.; PREDOJEVIC, ANA; ANTON-SOLANAS, CARLOS. Multipartite entanglement encoded in the photon-number basis by sequential excitation of a three-level system. OPTICS LETTERS, v. 48, n. 23, p. 4-pg., 2023-12-01. (19/22685-1, 21/10224-0, 20/00725-9, 18/15554-5)

MALLWEGER, MARION; DE OLIVEIRA, MURILO HENRIQUE; THOMM, ROBIN; PARKE, HARRY; KUK, NATALIA; HIGGINS, GERARD; BACHELARD, ROMAIN; VILLAS-BOAS, CELSO JORGE; HENNRICH, MARKUS. Single-Shot Measurements of Phonon Number States Using the Autler-Townes Effect. Physical Review Letters, v. 131, n. 22, p. 6-pg., 2023-11-28. (19/11999-5, 20/00725-9, 19/13143-0, 22/00209-6, 18/15554-5)

OLIVEIRA, MURILO H.; HIGGINS, GERARD; ZHANG, CHI; PREDOJEVIC, ANA; HENNRICH, MARKUS; BACHELARD, ROMAIN; VILLAS-BOAS, CELSO J.. Steady-state entanglement generation for nondegenerate qubits. PHYSICAL REVIEW A, v. 107, n. 2, p. 7-pg., 2023-02-06. (19/13143-0, 19/11999-5, 20/00725-9, 18/15554-5)