Arbitrary linear transformations for photons in the frequency synthetic dimension.

ABSTRACT: Arbitrary linear transformations are of crucial importance in a plethora of photonic applications spanning classical signal processing, communication systems, quantum information processing and machine learning. Here, we present a photonic architecture to achieve arbitrary linear transformations by harnessing the synthetic frequency dimension of photons. Our structure consists of dynamically modulated micro-ring resonators that implement tunable couplings between multiple frequency modes carried by a single waveguide. By inverse design of these short- and long-range couplings using automatic differentiation, we realize arbitrary scattering matrices in synthetic space between the input and output frequency modes with near-unity fidelity and favorable scaling. We show that the same physical

SUBMITTER: Buddhiraju S 

PROVIDER: S-EPMC8065043 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature