Optical Y-coupler as universal scattering element for quantum walks and multiport interferometry

Christopher R. Schwarze, Anthony D. Manni, David S. Simon, Alexander V. Sergienko

Published Jan 1, 2025• 0 citations

Abstract

We introduce a complete scattering matrix of the Y-coupler, demonstrating the device possesses strong back-reflections at some ports. This unique scattering property enables the construction of the Grover multiport used in super-resolution quantum interferometry.

DOI: 10.1364/cleo_at.2025.jps200_202

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