Details
| Original language | English |
|---|---|
| Article number | 074705 |
| Number of pages | 6 |
| Journal | Review of Scientific Instruments |
| Volume | 94 |
| Issue number | 7 |
| Publication status | Published - Jul 2023 |
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.
Keywords
- quant-ph, cond-mat.quant-gas, physics.atom-ph
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Instrumentation
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In: Review of Scientific Instruments, Vol. 94, No. 7, 074705, 07.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Dynamical low-noise microwave source for cold-atom experiments
AU - Meyer-Hoppe, Bernd
AU - Baron, Maximilian
AU - Cassens, Christophe
AU - Anders, Fabian
AU - Idel, Alexander
AU - Peise, Jan
AU - Klempt, Carsten
N1 - Publisher Copyright: © 2023 Author(s).
PY - 2023/7
Y1 - 2023/7
N2 - 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.
AB - 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.
KW - quant-ph
KW - cond-mat.quant-gas
KW - physics.atom-ph
UR - http://www.scopus.com/inward/record.url?scp=85165460903&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2003.10989
DO - 10.48550/arXiv.2003.10989
M3 - Article
VL - 94
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
SN - 0034-6748
IS - 7
M1 - 074705
ER -