Dresden 2026 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 44: Scanning probe techniques: Method development – Poster

O 44.15: Poster

Dienstag, 10. März 2026, 14:00–16:00, P2

Low latency, galvanically isolated data transfer architecture for distributed low-level precision measurements — Toni Marković, Shane O'Neill, Aitziber Herrero, David Zurbriggen, Daniel Uehli, and •Alessandro Pioda — SPECS Zurich GmbH, Technoparkstrasse 1, 8005 Zurich

Many recent achievements in the field of quantum devices, spintronics, novel materials and surface science, have been possible thanks to the ability to cool samples to temperatures significantly below 1 Kelvin and to the use of state of the art measurement electronics. Requirements for signal resolution, precision and quality increase significantly at low temperatures, while the growing complexity of experiments and higher measurement throughput require a growing number of signals, larger bandwidths, and push the cost of measurement electronics upwards.

Here we present a data transfer architecture that enables a low-latency, synchronous transfer of raw DAC and ADC data from multiple signal generation and acquisition interfaces to a central processing core. The architecture allows transfer of very high-resolution data with microsecond resolution, high resolution data with nanosecond resolution or a combination thereof. The use of off-the-shelf optical fiber cables for data transfer allows for decentralized measurements, simultaneous experiments on different experimental set-ups, as well as galvanic isolation between the processing core and the signal interfaces. The architecture can handle hundreds of signals, all synchronous and with no multiplexing. We also discuss state of the art signal interfaces and typical applications for this novel architecture.