June 30, 2025 to July 4, 2025
Europe/Vienna timezone

Interfacing Rydberg atoms with a high overtone bulk acoustic wave resonator in the GHz regime

Jul 3, 2025, 3:15 PM
1h 45m
Poster only Cold and ultracold atoms, molecules and ions, degenerate quantum gases, ultracold plasmas Poster Session 3

Speaker

Julia Gamper (Bonn University)

Description

Rydberg atoms exhibit strong electric dipole transitions over a large range of the electromagnetic spectrum, making them ideal candidates for hybrid quantum systems that connect the optical and microwave domains.

In this project, we plan to investigate the coupling between optically controlled Rydberg atoms and a high overtone bulk acoustic wave resonator (HBAR). Our goal is to explore the potential to cool and control one of the resonator's acoustic modes to its quantum mechanical ground state by exchanging microwave photons with the Rydberg atoms.

This poster presents our approach to realize such a hybrid system. We describe the design and construction progress of our setup with our solution for the initial laser cooling of rubidium atoms and their transport to the cryogenic environment. To couple Rydberg atoms to the HBAR, it is necessary to bring the atoms close to the resonator surface. For this purpose, we plan to implement an on-chip magnetic trap. In a first generation, this chip will contain an integrated microwave resonator instead of the HBAR to test the individual steps such as atom trapping, Rydberg excitation and electric field control. The next-generation atom chip will include the HBAR to enable the planned experiments.

Authors

Julia Gamper (Bonn University) Cedric Wind (Bonn University) Valerie Mauth (Bonn University) Samuel Germer (Bonn University) Wolfgang Alt (Bonn University) Sebastian Hofferberth (Bonn University)

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