International Journal of Electronics and Telecommunications

Kasprowicz, G.; Harty, T. P.; Bourdeauducq, Sébastien; Jördens, Robert; Allcock, D. T. C.; Nadlinger, D. P.; Britton, Joseph W.; Sotirova, Ana; Nowicka, Dorota

doi:10.24425/ijet.2022.139859

2021

DOI: 10.24425/ijet.2022.139859

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International Journal of Electronics and Telecommunications

G. Kasprowicz

T. P. Harty

Sébastien Bourdeauducq³

et al.

Abstract: We describe Urukul, a frequency synthesizer based on direct digital synthesis (DDS), optimized for wave generate control in atomic, molecular and optical (AMO) physics experiments. The Urukul module is a part of the Sinara family of modular, open-source hardware designed for the ARTIQ quantum operating system. The Urukul has 4-channel, sub-Hz frequency resolution, controlled phase steps and accurate output amplitude control. The module is available in two population variants. This paper presents Urukul module … Show more

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Cited by 3 publications

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Dynamical low-noise microwave source for cold-atom experiments

Meyer

Idel²,

Anders³

et al. 2023

Review of Scientific Instruments

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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.

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Dynamical low-noise microwave source for cold-atom experiments

Meyer

Idel²,

Anders³

et al. 2023

Review of Scientific Instruments

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show abstract

Two-mode squeezing and SU(1,1) interferometry with trapped ions

Metzner,

Quinn,

Brudney

et al. 2024

Phys. Rev. A

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Progress toward ultra-cold Sr for the AION project—A red MOT and an optical-heterodyne diagnostic tool for injection-locked laser diodes

Pasatembou,

Baynham,

Buchmüller

et al. 2024

AVS Quantum Science

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Long-baseline atom interferometers, such as the one to be built by the AION collaboration, require ultra-cold atomic clouds. These are produced by trapping the atoms in magneto-optical traps (MOTs) using high-power, narrow-linewidth lasers. We report on the laser and optical master–slave injection-locked system used to address the 1S0–3P1 strontium transition at 689 nm and on the trapping of strontium atoms in a narrowband MOT. We demonstrate the quality of the injection through the characterization of the injection lock using an easy-to-assemble method that uses a double-pass acousto-optic modulator to generate and detect a heterodyne beatnote. The reported system is used to produce an atomic cloud at a temperature of 812(43) nK in a narrowband red MOT.

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International Journal of Electronics and Telecommunications

Cited by 3 publications

References 2 publications

Dynamical low-noise microwave source for cold-atom experiments

Dynamical low-noise microwave source for cold-atom experiments

Two-mode squeezing and SU(1,1) interferometry with trapped ions

Progress toward ultra-cold Sr for the AION project—A red MOT and an optical-heterodyne diagnostic tool for injection-locked laser diodes

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