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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.)

Control of Rydberg-atom blockade by dc electric-field orientation in a quasi-one-dimensional sample

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Goncalves, Luis Felipe ; Marcassa, Luis Gustavo
Total Authors: 2
Document type: Journal article
Source: Physical Review A; v. 94, n. 4 OCT 28 2016.
Web of Science Citations: 4

Rydberg atoms possess a strong atom-atom interaction, which limits its density in an atomic sample. Such effect is known as a Rydberg-atom blockade. Here, we present a way to control such effect by directly orienting the induced atomic dipole moment using a dc external electrical field. To demonstrate it, we excite the 50S(1/2) Rb atomic state in a quasiunidimensional sample held in a quasielectrostatic trap. A pure nS state holds only van der Waals interaction at long range, but in the presence of an external electric field the state mixing leads to strong dipole-dipole interactions. We have measured the Rydberg-atom population as a function of ground-state atoms density for several angles between the electric field and the main axis of the unidimensional sample. The results indicate that the limit on the final Rydberg density can be controlled by electric-field orientation. Besides, we have characterized the sample by using a single-atom ion imaging technique, demonstrating that it does behave as a unidimensional sample. (AU)

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