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

Finite size cavity effect on nS rubidium Rydberg state lifetimes

Full text
Author(s):
Magnani, Barbara [1] ; Mojica-Casique, Cristian [1] ; Marcassa, Luis Gustavo [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Fis Sao Carlos, Caixa Postal 369, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS; v. 53, n. 6 MAR 28 2020.
Web of Science Citations: 0
Abstract

In this work, we present lifetime measurements of nS states of Rb as a function of the principal quantum number (40 <= n <= 70) using a sample of cold atoms held in a magneto-optical trap, which is performed in a finite size metal vacuum chamber. The Rydberg states are excited through a two-photon transition, and detected by pulsed field ionization. Our measurements are larger than the predictions by well established theoretical model (1984 Phys. Rev. A 30 2881 and 2009 Phys. Rev. A 79 052504). We have implemented a theoretical model, which considers the vacuum chamber as a lossy Fabry-Perot cavity with a discrete spectrum, and compared with experimental results. Such comparison indicates that the blackbody radiation contribution on Rydberg state lifetime can be decreased by using a small size metal cavity, without the need of cryogenic environment. This effect may have application in experiments where longer Rydberg lifetimes are required. (AU)

FAPESP's process: 13/02816-8 - Manipulation of atomic collisions in optical traps
Grantee:Luis Gustavo Marcassa
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/21311-2 - Cold rydberg atoms: few body and high order interaction effects
Grantee:Bárbara da Fonseca Magnani
Support type: Scholarships in Brazil - Post-Doctorate