Photonic integrated circuit for performing matrix-matrix multiplication

Abstract

A photonic integrated circuit for performing matrix-matrix multiplication includes a first layer and a second layer arranged on top of the first layer. A plurality of first waveguides is arranged within the first layer, and a plurality of second waveguides is arranged within the second layer, with the waveguides in each layer configured to avoid crossings in a top view. At least two coupling positions are provided at which at least one first waveguide is optically coupled to at least one second waveguide. The circuit further includes at least four modulators optically coupled by the first waveguides and the second waveguides and configured to perform multiplication and addition of matrix values. The first waveguides are formed from a first material and the second waveguides are formed from a second material different from the first material, thereby enabling efficient interlayer optical coupling and a compact, scalable architecture for photonic matrix-matrix multiplication.

Dependencies are inferred from the claim text.