Collective effects on atomic systems, nuclear spins and cavity quantum electrodynamics

• Grant number: 19/11999-5
• Support Opportunities: Regular Research Grants
• Start date: September 01, 2019
• End date: February 28, 2022
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal Investigator: Celso Jorge Villas-Bôas
• Grantee: Celso Jorge Villas-Bôas
• 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 ; Elnaz Darsheshdar

Abstract

With the present project, we intend to continue studies on collective behavior in different physical systems. We will investigate topics related to several ongoing projects, namely: 1) the role of long-range interactions in the dynamics of atomic ensembles (two-level atoms) excited by external fields. We will investigate the connection between quantum correlations (entanglement and quantum discord) between the ensemble atoms and the properties of the light scattered throughout the ensemble. We will also extend the studies for three-level atomic systems, where we will investigate the phenomenon of electromagnetically induced transparency (EIT) taking into account such long-range interactions. We will try to understand how such interactions affect the EIT and its applications as quantum memory and reduction of the group speed of a given pulse of light; 2) Dissipative dynamics in strongly interacting systems: i) Quantum Cavity Electrodynamics (EQC) with superconducting qubits and ii) Nuclear Magnetic Resonance (NMR) nuclear spins. The first system has attracted the attention of the quantum optics community since it allows for new coupling regimes with new physical phenomena, besides being a strong candidate for the implementation of quantum computation algorithms. NMR is a system widely studied in Statistical Mechanics, very rich in thermodynamic and magnetic properties; 3) Processes in cavity QED with few atoms or quantum dot molecules in optical cavities, aiming at the implementation of quantum information processes (quantum memory, logic gates, quantum transistor), electromagnetically induced transparency (EIT) processes and nonlinear effects in the atom-field interaction considering one or two cavity modes. (AU)

Scientific publications

(13)

(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)

CARDOSO, FERNANDO R.; ROSSATTO, DANIEL Z.; FERNANDES, GABRIEL P. L. M.; HIGGINS, GERARD; VILLAS-BOAS, CELSO J.. Superposition of two-mode squeezed states for quantum information processing and quantum sensing. Physical Review A, v. 103, n. 6, JUN 2 2021. (19/11999-5)

SANTOS, ALAN C.; VILLAS-BOAS, C. J.; BACHELARD, R.. Quantum adiabatic brachistochrone for open systems. Physical Review A, v. 103, n. 1, JAN 11 2021. (19/11999-5, 19/22685-1, 18/15554-5)

SANTOS, ALAN C.; CIDRIM, ANDRE; VILLAS-BOAS, CELSO JORGE; KAISER, ROBIN; BACHELARD, ROMAIN. Generating long-lived entangled states with free-space collective spontaneous emission. PHYSICAL REVIEW A, v. 105, n. 5, p. 6-pg., 2022-05-20. (18/15554-5, 19/22685-1, 19/13143-0, 21/10224-0, 17/09390-7, 19/11999-5)

MENDONCA, TAYSA M.; SOUZA, ALEXANDRE M.; DE ASSIS, ROGERIO J.; DE ALMEIDA, NORTON G.; SARTHOUR, ROBERTO S.; OLIVEIRA, IVAN S.; VILLAS-BOAS, CELSO J.. Reservoir engineering for maximally efficient quantum engines. PHYSICAL REVIEW RESEARCH, v. 2, n. 4, DEC 24 2020. (19/11999-5, 13/04162-5)

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)

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)

OLIVEIRA, M. H.; MAXIMO, C. E.; VILLAS-BOAS, C. J.. Sensitivity of electromagnetically induced transparency to light-mediated interactions. Physical Review A, v. 104, n. 6, DEC 8 2021. (17/13250-6, 19/11999-5)

CIPRIS, A.; MOREIRA, N. A.; DO ESPIRITO SANTO, T. S.; WEISS, P.; VILLAS-BOAS, C. J.; KAISER, R.; GUERIN, W.; BACHELARD, R.. Subradiance with Saturated Atoms: Population Enhancement of the Long-Lived States. Physical Review Letters, v. 126, n. 10, MAR 12 2021. (19/02071-9, 19/13143-0, 18/15554-5, 18/12653-2, 18/01447-2, 19/11999-5)

HU, CHANG-KANG; QIU, JIAWEI; SOUZA, PAULO J. P.; YUAN, JIAHAO; ZHOU, YUXUAN; ZHANG, LIBO; CHU, JI; PAN, XIANCHUANG; HU, LING; LI, JIAN; et al. Optimal charging of a superconducting quantum battery. QUANTUM SCIENCE AND TECHNOLOGY, v. 7, n. 4, p. 15-pg., 2022-10-01. (18/15554-5, 21/10224-0, 19/13143-0, 19/22685-1, 19/11999-5)

RICARDO, ALEXANDRE C.; FERNANDES, GABRIEL P. L. M.; DUZZIONI, EDUARDO I.; CAMPO, VIVALDO L.; VILLAS-BOAS, CELSO J.. Alternatives to a nonhomogeneous partial differential equation quantum algorithm. PHYSICAL REVIEW A, v. 106, n. 5, p. 10-pg., 2022-11-28. (19/11999-5, 19/13143-0)

CARDOSO, FERNANDO R.; AKAMATSU, DANIEL YOSHIO; CAMPO JUNIOR, VIVALDO LEIRIA; DUZZIONI, EDUARDO I.; JARAMILLO, ALFREDO; VILLAS-BOAS, CELSO J.. etailed Account of Complexity for Implementation of Circuit-Based Quantum Algorithm. FRONTIERS IN PHYSICS, v. 9, NOV 1 2021. (19/11999-5)

CARDOSO, FERNANDO R.; ROSSATTO, DANIEL Z.; FERNANDES, GABRIEL P. L. M.; HIGGINS, GERARD; VILLAS-BOAS, CELSO J.. Superposition of two-mode squeezed states for quantum information processing and quantum sensing. PHYSICAL REVIEW A, v. 103, n. 6, p. 10-pg., 2021-06-02. (19/11999-5)

SANTOS, ALAN C.; VILLAS-BOAS, C. J.; BACHELARD, R.. Quantum adiabatic brachistochrone for open systems. PHYSICAL REVIEW A, v. 103, n. 1, p. 9-pg., 2021-01-11. (19/11999-5, 19/22685-1, 18/15554-5)