Regensburg 2025 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 38: Superconducting Electronics: SQUIDs, Qubits, Circuit QED I
TT 38.7: Vortrag
Mittwoch, 19. März 2025, 18:15–18:30, H32
High-temperature superconducting Josephson junctions for optical neuromorphic computing — •Elena Vinnemeier1, Sebastian Schaper1, Malik Ayachi2, Vincent Humbert2, Javier Villegas2, and Ursula Wurstbauer1 — 1Institute of Physics, University of Münster, Münster, Germany — 2Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay, Palaiseau, France
Josephson Junctions (JJ) offer a promising platform for neuromorphic computing, owing to their inherent ability to emulate key neuronal behaviours such as spiking and bursting. When coupled with high-temperature superconductors and reconfigurable interconnects, these junctions present a viable alternative to traditional CMOS-based approaches, providing a low-power solution that is both faster and more efficient. The integration of high-temperature superconductors into the JJs enhances energy efficiency while exploiting their sensitivity to external stimuli. The currently missing integrated memory element is addressed by replacing passive interconnections with active links, which can be tuned by external stimuli. Our goal is to achieve optical modulation of the critical current IC through light irradiation. To explore this capability, we characterize semiconducting materials from the transition metal dichalcogenide (TMDCs) family in combination with superconducting JJs using Raman spectroscopy and photoluminescence (PL), contrasting their properties as a function of environmental conditions.
This project was supported by the EIC pathfinder grant No. 101130224 ’JOSEPHINE’.
Keywords: Superconductivity; Josephson Junctions; TMDC; Semiconductor