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AKPIK: Arbeitskreis Physik, moderne Informationstechnologie und Künstliche Intelligenz

AKPIK 5: Poster

AKPIK 5.1: Poster

Donnerstag, 20. März 2025, 15:00–16:30, P2

Photonic Matrix-Vector Multiplication at the Quantum Limit of single photons — •Mingwei Yang^1,2, Okan Akyüz², Felix Kübler², Konrad Tschernig¹, Xavi Barcons^1,3, Enrico Stoll², and Janik Wolters^1,2 — ¹Deutsches Zentrum für Luft- und Raumfahrt, Institute of Optical Sensor Systems, Berlin, Germany. — ²Technische Universität Berlin, Berlin, Germany. — ³Humboldt-Universität zu Berlin, Berlin, Germany.

Photonic integrated circuits (PICs) have emerged as a promising solution for performing energy-efficient matrix multiplication and addition operations (MACs) in neural networks [1]. In this work, we demonstrate a 4x4 optical matrix-vector multiplication (MVM) using a mesh of Mach-Zehnder interferometers (MZIs), operating with attenuated laser pulses at the single-photon level. Using this as an example, we analyze the quantum limit of energy consumption of optical systems for classical machine learning. [1] Wetzstein, Gordon, et al. "Inference in artificial intelligence with deep optics and photonics." Nature 588.7836 (2020): 39-47.

Keywords: optical neural networks; photonic integrated circuits (PICs); optical matrix-vector multiplication; Mach-Zehnder interferometers (MZIs); neuromorphic computing