The development of large-scale optical quantum information processing circuits ground on the stability and reconfigurability enabled by integrated photonics. We demonstrate a reconfigurable 8x8 integrated linear optical network based on silicon nitride waveguides for quantum information processing. Our processor implements a novel optical architecture enabling any arbitrary linear transformation and constitutes the largest programmable circuit reported so far on this platform. We validate a variety of photonic quantum information processing primitives, in the form of Hong-Ou-Mandel interference, bosonic coalescence/anticoalescence and high-dimensional single-photon quantum gates. We achieve fidelities that clearly demonstrate the promising future for large-scale photonic quantum information processing using low-loss silicon nitride.
@article{arxiv.1805.10999,
title = {8x8 Reconfigurable quantum photonic processor based on silicon nitride waveguides},
author = {Caterina Taballione and Tom A. W. Wolterink and Jasleen Lugani and Andreas Eckstein and Bryn A. Bell and Robert Grootjans and Ilka Visscher and Dimitri Geskus and Chris G. H. Roeloffzen and Jelmer J. Renema and Ian A. Walmsley and Pepijn W. H. Pinkse and Klaus-Jochen Boller},
journal= {arXiv preprint arXiv:1805.10999},
year = {2019}
}
Comments
Added supplementary materials, extended introduction, new figures, results unchanged