Abstract

Quantum and neuromorphic computational platforms based on integrated photonic circuits require next-generation optical functionalities and increasingly complex on-chip light-routing capabilities enabling, for instance, high interconnectivity and superpositions, which are paramount for the realization of artificial neural networks. In such integrated photonic circuits, the single optical interconnect would be individually designed and optimized; for complex networks, two-photon polymerization (TPP)-based microprinting allows for expanding the waveguides into 3D which is not achievable by standard planar lithography fabrication technologies.

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