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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Anisotropic interactions in electric field polarized ultracold Rydberg gases

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Author(s):
Jahangiri, Akbar [1] ; Shaffer, James P. [1] ; Goncalves, Luis Felipe [2] ; Marcassa, Luis Gustavo [2]
Total Authors: 4
Affiliation:
[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
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS; v. 53, n. 1 JAN 14 2020.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 11/22309-8 - Microstructures with cold Rydberg atoms
Grantee:Luís Felipe Barbosa Faria Gonçalves
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/02816-8 - Manipulation of atomic collisions in optical traps
Grantee:Luis Gustavo Marcassa
Support type: Research Projects - Thematic Grants