Theoretical Quantum Optics Group
We investigate open quantum systems, quantum optics, quantum information, quantum thermodynamics, and theoretical models for emerging quantum technologies.
About the group
Theoretical research in optical quantum systems and their applications
The Theoretical Quantum Optics Group carries out research in theoretical physics with a focus on quantum systems, open-system dynamics, quantum correlations, entanglement, metrology, quantum thermodynamics, and quantum information.
The group is based at the Institute of Physics of the Federal University of Alagoas and contributes to the training of undergraduate, master's, and doctoral students, while also collaborating with researchers from other institutions.
4
Main research areas
UFAL
Institute of Physics
Theory
Modeling and simulation
Quantum
Optics and quantum information
Research areas
Research topics
ψ
Quantum optics
Theoretical study of light-matter interaction, cavities, Jaynes-Cummings and Tavis-Cummings models, and bosonic systems.
ρ
Open quantum systems
Dissipative dynamics, non-Markovianity, master equations, structured reservoirs, and effective models for decoherence.
E
Quantum thermodynamics
Energy, work, heat, ergotropy, quantum batteries, and thermodynamic limits in microscopic systems.
QI
Quantum information
Quantum correlations, entanglement, generalized measurements, quantum channels, and foundations of information theory.
PT
Non-Hermitian systems
Effective dynamics, PT symmetry, exceptional points, and applications in optical and quantum systems.
∑
Computational modeling
Numerical simulations in Python, QuTiP, and analytical methods applied to many-body models and dissipative systems.
Team
Researchers and students
Current members of the group are listed below.
Prof. Dr. Paulo Brandão
Group coordinator
Research topics: quantum optics and classical optics with emphasis on open quantum systems, quantum batteries, propagation of classical and quantum fields in coupled waveguides, exceptional points, non-Hermitian physics, and PT symmetry.
Prof. Dr. Solange Bessa Cavalcanti
Full Professor at IF-UFAL
Research areas include solitons, linear and nonlinear wave propagation, nanostructured systems, metamaterials, photonic crystals, open quantum systems, and PT symmetry.
Igor Beder Burti Ribeiro
Master's student
Research topics: quantum batteries; photon propagation in coupled waveguides.
Airton Cardoso Vasconcelos
Doctoral student
Research topics: photon propagation and entanglement characterization in disordered waveguides.
Pedro Café
Undergraduate student
Research topic: open quantum systems.
Ryan Pedro Barros
Undergraduate student
Research topic: quantum batteries in optical systems.
Ramsés César Santos de Almeida
Master's student
Research topic: optical solitons in non-Hermitian discrete lattices.
Wallace André Teixeira Barbosa
Master's student
Research topic: Padé approximants method in optical systems.
Mateus Pereira dos Santos
Doctoral student
Research topic: dissipative quantum batteries in PT-symmetric systems and Liouvillian exceptional points.
Eloisa Gabryela de Souza Nicácio
Master's student
Research topic: surface plasmon polaritons in nanostructured media.
João Pedro Rodrigues Leonel
Master's student
Research topic: nonlinear quantum batteries.
Scientific output
Selected publications
Published articles in 2026
Contact
Contact the group
For information about research, collaboration, or academic supervision, use the contact details below.
Group: Theoretical Quantum Optics Group
Institution: Institute of Physics — Federal University of Alagoas
Address: A. C. Simões Campus, Maceió — AL, Brazil
Email: paulo.brandao@fis.ufal.br
Institutional website: www.ufal.br
Lattes CV: http://lattes.cnpq.br/5646717030559668