Mainz 2017 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 53: Poster: Quantum Optics and Photonics III

Q 53.80: Poster

Donnerstag, 9. März 2017, 17:00–19:00, P OG2

Low Noise Fast Multichannel Arbitrary waveform Generator for the Segmented Trap — •Vidyut Kaushal, Heinz Lenk, Ulrich G. Poschinger, and Ferdinand Schmidt-Kaler — QUANTUM, Institut für Physik, Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany

Noisy trap electrode potentials have always been a fundamental source of decoherence in ion-trap based studies of quantum systems. Scaling up the number of electrode in modern segmented traps, this becomes even more challenging, as fast and simultaneous real-time control of the segment voltages with high signal integrity and sampling rate is required. We present a functional design of low noise(<-70dbm), high precision, fast AWG featuring 80 independent analog channels. Additionally, the delay between consecutive samples can be controlled in steps of 20 ns, resolving typical trap oscillation periods - a crucial feature for the control of fast shuttling operations [1,2]. The output voltage range of +/- 40 V allows for tight confinement of trapped ions and compensation of signal distortion.

We describe the details of the architecture and thorough characterization of the relevant signals.The implementation of a toolset of shuttling operations for scalable quantum computing is shown. We also discuss future extensions towards a complete real-time control system including feedback capabilities.

[1] A. Walther et al., PRL 109, 080501 (2012)

[2] T. Ruster et al., PRA 90, 033410 (2014)