Dynamical low-noise microwave source for cold-atom experiments
Abstract
The generation and manipulation of ultracold atomic ensembles in the quantum regime require the application of dynamically controllable microwave fields with ultra-low noise performance. Here, we present a low-phase-noise microwave source with two independently controllable output paths. Both paths generate frequencies in the range of 6.835 GHz ± 25 MHz for hyperfine transitions in 87Rb. The presented microwave source combines two commercially available frequency synthesizers: an ultra-low-noise oscillator at 7 GHz and a direct digital synthesizer for radio frequencies. We demonstrate a low integrated phase noise of 480 µrad in the range of 10 Hz to 100 kHz and fast updates of frequency, amplitude, and phase in sub-µs time scales. The highly dynamic control enables the generation of shaped pulse forms and the deployment of composite pulses to suppress the influence of various noise sources.
Details
- Organisationseinheit(en)
-
Institut für Quantenoptik
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)
- Typ
- Artikel
- Journal
- Review of Scientific Instruments
- Band
- 94
- Anzahl der Seiten
- 6
- ISSN
- 0034-6748
- Publikationsdatum
- 07.2023
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Instrumentierung
- Elektronische Version(en)
-
https://doi.org/10.48550/arXiv.2003.10989 (Zugang:
Offen
)
https://doi.org/10.1063/5.0160367 (Zugang: Offen )
