Anisotropic interactions in electric field polarized ultracold Rydberg gases

Autor(es)

Jahangiri, Akbar ^[1] ; Shaffer, James P. ^[1] ; Goncalves, Luis Felipe ^[2] ; Marcassa, Luis Gustavo ^[2]

Afiliação do(s) autor(es)

^[1] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, 440 W Brooks St, Norman, OK 73019 - USA

^[2] Univ Sao Paulo, Inst Fas Sao Carlos, Caixa Postal 369, BR-13560970 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS; v. 53, n. 1 JAN 14 2020.
• Citações Web of Science: 0

Resumo

We calculate pair potential curves for interacting Rydberg atoms in a constant electric field and use them to determine the effective C-3 dipole?dipole and C-6 van der Waals coefficients. We compare the C-3 and C-6 with experiments where the angle of a polarizing electric field is varied with respect to the axis of a quasi-1-dimensional trap at ultracold temperatures. The dipoles produced via polarization of the atoms have an angular dependent dipole?dipole interaction. We focus on the interaction potential of two rubidium Rydberg atoms in 50S1/2<i states in the blockade regime. For internuclear distances close to the blockade radius, R(bl)4?6 ?m, molecular calculations are in much better agreement with experimental results than those based on the properties of single atoms and independent calculations of C-3 and C-6 which were used to analyze the original experiment. We find that the calculated C-6 coefficient is within 8% of the experimental value while the C-3 coefficient is within 20% of the experimental value. (AU)

• Processo FAPESP: 11/22309-8 - Microestruturas com átomos de Rydberg frios
• Beneficiário: Luís Felipe Barbosa Faria Gonçalves
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 13/02816-8 - Manipulação de colisões atômicas em armadilhas ópticas
• Beneficiário: Luis Gustavo Marcassa
• Modalidade de apoio: Auxílio à Pesquisa - Temático