Manipulation of atomic collisions in optical traps

• Grant number: 13/02816-8
• Support type: Research Projects - Thematic Grants
• Duration: September 01, 2013 - August 31, 2019
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal researcher: Luis Gustavo Marcassa
• Grantee: Luis Gustavo Marcassa
• Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated scholarship(s): 18/06835-0 - Magneto optical trap of Rb2 molecules and colissional studies, BP.DR; 18/04493-5 - Deceleration of a molecular supersonic beam and magneto-optical entrapment of Rb2, BP.PD; 16/21311-2 - Cold rydberg atoms: few body and high order interaction effects, BP.PD; + associated scholarships 15/18420-1 - Instrumentation for Rydberg atom's experiments, BP.IC; 14/24479-6 - KRb molecules in an optical dipole TRAP, BP.MS; 13/19203-9 - Instrumentation for experiments with Rydberg atoms, BP.IC - associated scholarships

Abstract

In recent years, our laboratory completely dominated the technique of optical traps dipole. Currently, we produce on a daily basis trapped samples of one or two atomic species, using lasers or 1.6 microns and at 10.6 microns. Such samples have generally 10e6 trapped atoms in densities of 10e12 and átomos/cm3 temperatures less than 20 ¼K. Currently, this sample is trapped the starting point of any kind of experiment in modern atomic physics. The objective of this project is to use our optical dipole trap to manipulate the collisional processes, whether involving Rydberg atoms and heteronuclear or collisions. With Rydberg atoms, we want to study the anisotropy in potential long-range microstructures through space. In heteronuclear samples, we use the dipole trap to trap the atomic sample heteronuclear; -fotoassocia there and trap the cold molecules. Optical pumping processes are used to produce molecules in the fundamental vibrational state. (AU)

Scientific publications

(9)

(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)

MAGNANI, BARBARA; MOJICA-CASIQUE, CRISTIAN; MARCASSA, LUIS GUSTAVO. Finite size cavity effect on nS rubidium Rydberg state lifetimes. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v. 53, n. 6 MAR 28 2020. Web of Science Citations: 0.

JAHANGIRI, AKBAR; SHAFFER, JAMES P.; GONCALVES, LUIS FELIPE; MARCASSA, LUIS GUSTAVO. Anisotropic interactions in electric field polarized ultracold Rydberg gases. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v. 53, n. 1 JAN 14 2020. Web of Science Citations: 0.

PASSAGEM, HENRY FERNANDES; COLIN-RODRIGUEZ, RICARDO; TALLANT, JONATHAN; VENTURA DA SILVA, PAULO CESAR; BOULOUFA-MAAFA, NADIA; DULIEU, OLIVIER; MARCASSA, LUIS GUSTAVO. Continuous Loading of Ultracold Ground-State Rb-85(2) Molecules in a Dipole Trap Using a Single Light Beam. Physical Review Letters, v. 122, n. 12 MAR 26 2019. Web of Science Citations: 0.

RODRIGUES, JOAO D.; GONCALVES, LUIS F.; TERCAS, HUGO; MARCASSA, LUIS G.; MENDONCA, JOSE T. Roton-induced trapping in strongly correlated Rydberg gases. Physical Review A, v. 98, n. 6 DEC 26 2018. Web of Science Citations: 1.

PASSAGEM, HENRY FERNANDES; COLIN-RODRIGUEZ, RICARDO; VENTURA DA SILVA, PAULO CESAR; BOULOUFA-MAAFA, NADIA; DULIEU, OLIVIER; MARCASSA, LUIS GUSTAVO. Formation of ultracold molecules induced by a high-power single-frequency fiber laser. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v. 50, n. 4 FEB 2017. Web of Science Citations: 2.

GONCALVES, LUIS FELIPE; MARCASSA, LUIS GUSTAVO. Control of Rydberg-atom blockade by dc electric-field orientation in a quasi-one-dimensional sample. Physical Review A, v. 94, n. 4 OCT 28 2016. Web of Science Citations: 4.

RODRIGUES, J. D.; MARCASSA, L. G.; MENDONCA, J. T. Excitation of high orbital angular momentum Rydberg states with Laguerre-Gauss beams. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v. 49, n. 7 APR 14 2016. Web of Science Citations: 13.

KONDO, JORGE M.; BOOTH, DONALD; GONCALVES, LUIS F.; SHAFFER, JAMES P.; MARCASSA, LUIS G. Role of multilevel Rydberg interactions in electric-field-tuned Forster resonances. Physical Review A, v. 93, n. 1 JAN 8 2016. Web of Science Citations: 6.

KONDO, JORGE M.; GONCALVES, LUIS F.; CABRAL, JADER S.; TALLANT, JONATHAN; MARCASSA, LUIS G. Two-body Forster resonance involving Rb nD states in a quasi-electrostatic trap. Physical Review A, v. 90, n. 2 AUG 18 2014. Web of Science Citations: 5.