Dynamical low-noise microwave source for cold-atom experiments
- URL: http://arxiv.org/abs/2003.10989v3
- Date: Mon, 6 Nov 2023 15:42:51 GMT
- Title: Dynamical low-noise microwave source for cold-atom experiments
- Authors: Bernd Meyer-Hoppe, Maximilian Baron, Christophe Cassens, Fabian
Anders, Alexander Idel, Jan Peise, Carsten Klempt
- Abstract summary: We present a low-phase-noise microwave source with two independently controllable output paths.
The presented microwave source combines two commercially available frequency synthesizers.
We demonstrate a low integrated phase noise of $480,mu$rad in the range of $10,$Hz to $100,$kHz.
- Score: 37.69303106863453
- License: http://creativecommons.org/licenses/by/4.0/
- 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 $\pm$ $25\,$MHz for hyperfine
transitions in $^{87}$Rb. The presented microwave source combines two
commercially available frequency synthesizers: an ultra-low-noise oscillator at
$7\,$GHz and a direct digital synthesizer for radiofrequencies. We demonstrate
a low integrated phase noise of $480\,\mu$rad in the range of $10\,$Hz to
$100\,$kHz and fast updates of frequency, amplitude and phase in sub-$\mu$s
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.
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