Schulz, F.; Groß, F.; Förster, J.; Mayr, S.; Weigand, M.; Goering, E.; Gräfe, J.; Schütz, G.; Wintz, S.: Realization of a magnonic analog adder with frequency-division multiplexing. AIP Advances 13 (2023), p. 015115/1-7
10.1063/5.0120826
Open Access Version
Abstract:
Being able to accurately control the interaction of spin waves is a crucial challenge for magnonics in order to offer an alternative wave-based computing scheme for certain technological applications. Especially in neural networks and neuromorphic computing, wave-based approaches can offer significant advantages over traditional CMOS-based binary computing schemes with regard to performance and power consumption. In this work, we demonstrate precise modulation of phase- and amplitude-sensitive interference of coherent spin waves in a yttrium–iron–garnet based magnonic analog adder device, while also showing the feasibility of frequency-division multiplexing. Using time-resolved scanning transmission x-ray microscopy, the interference was directly observed, giving an important proof of concept for this kind of analog computing device and its underlying working principle. This constitutes a step toward wave-based analog computing using magnons as an information carrier.