Effects of microwave cavity on Rb Rydberg atoms

POSTER

Abstract

In this work, we present lifetime measurements of Rb Rydberg states using a sample of cold atoms held in a magneto-optical trap, which is performed inside a microwave cavity. 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. 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.

*This work is supported by Grants 2019/10971-0 and 2021/06371-7, São Paulo Research Foundation (FAPESP). It is also supported by a grant (W911NF2110211) from the US Army.

Presenters

  • Luis Gustavo G Marcassa

    • University of Sao Paulo
    • Sao Carlos Institute of Physics at the University of Sao Paulo
    • Sao Carlos Institute of Physics at the USP

Authors

  • Luis Gustavo G Marcassa

    • University of Sao Paulo
    • Sao Carlos Institute of Physics at the University of Sao Paulo
    • Sao Carlos Institute of Physics at the USP

  • Naomy Duarte Gomes

    • Sao Carlos Institute of Physics at the U
    • Sao Carlos Institute of Physics at the University of Sao Paulo

  • Barbara Magnani

    • Sao Carlos Institute of Physics at the University of Sao Paulo

  • Cristian A Mojica-Casique

    • Sao Carlos Institute of Physics at the University of Sao Paulo

  • Marcos R Cardoso

    • Sao Carlos Institute of Physics at the University of Sao Paulo
    • Sao Carlos Institute of Physics at the USP

  • Daniel Varela Magalhães

    • University of Sao Paulo
    • Sao Carlos Institute of Physics at the University of Sao Paulo