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Photonics Group

Rydberg Sensing & Metrology

Rydberg Sensing and Metrology is an emerging research field that explores highly excited atoms for the detection and measurement of electromagnetic fields with high sensitivity and precision. This area is closely related to Atomic and Molecular Physics, with a particular focus on the interaction between atoms and electromagnetic radiation, as well as the development of quantum-based sensing techniques.

A central research direction is the study of ultra-cold Rydberg atoms. By cooling atoms to very low temperatures, it is possible to reduce their motion and achieve greater control over their quantum states. This provides an ideal platform for studying light–matter interactions and developing high-precision measurement techniques. Quasi-electrostatic dipole traps are also important for the controlled confinement and manipulation of atoms, enabling more stable and precise experiments.


Publications

Multiclass classifier based on deep learning for detection of citrus disease using fluorescence imaging spectroscopy

RUAN F O NEVES, CAIO B WETTERICH, ELAINE P M SOUSA AND LUIS G MARCASSA

Laser Phys. 33, 055602 (2023)


Proposal for Zeeman slowing of Rb2 molecules in a supersonic beam, inducing internal cooling

MANUEL ALEJANDRO LEFRáN TORRES, HENRY FERNANDES PASSAGEM, DAVID RODRíGUEZ FERNáNDEZ, EDUARDO DA COSTA PAUL, CRISTIAN ADAN MOJICA CASIQUE, OLIVIER DULIEU, NADIA BOULOUFA-MAAFA AND LUIS GUSTAVO MARCASSA

J. Phys. B: At. Mol. Opt. Phys. 56, 065301 (2023)


High resolution laser spectroscopy of iodine molecule in the 14600 to 14710 cm-1 range

M. A. L. TORRES, D. R. FERNáNDEZ, M. R. CARDOSO, L. G. MARCASSA

Journal of Molecular Spectroscopy, 387, 111668 (2022)


Polarization Spectroscopy Applied to Electromagnetically Induced Transparency in Hot Rydberg Atoms Using a Laguerre–Gaussian Beam

NAOMY DUARTE GOMES, BáRBARA DA FONSECA MAGNANI, JORGE DOUGLAS MASSAYUKI KONDO AND LUIS GUSTAVO MARCASSA

Atoms 10, 58 (2022)


Role of multilevel Rydberg interactions in electric-field-tuned Förster resonances

J.M. KONDO, D. BOOTH, L.F. GONÇALVES, J.P. SHAFFER, L.G. MARCASSA

Physical Review A, 93, 012703 (2016)


Interactions in Ultracold Rydberg Gases

LUIS G. MARCASSA, JAMES P. SHAFFER

Advances in Atomic, Molecular, and Optical Physics, Volume 63, Chapter 2, 48 (2014)