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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

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

Texto completo
Autor(es):
Goncalves, Luis Felipe ; Marcassa, Luis Gustavo
Número total de Autores: 2
Tipo de documento: Artigo Científico
Fonte: Physical Review A; v. 94, n. 4 OCT 28 2016.
Citações Web of Science: 3
Resumo

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)

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