Scaling-up optical quantum technologies requires to combine highly efficient multi-photon sources and integrated waveguide components. Here, we interface these scalable platforms: a quantum dot based multi-photon source and a reconfigurable photonic chip on glass are combined to demonstrate high-rate three-photon interference. The temporal train of single-photons obtained from a quantum emitter is actively demultiplexed to generate a 3.8 kHz three-photon source, which is then sent to the input of a tuneable tritter circuit, demonstrating the on-chip quantum interference of three indistinguishable single-photons. Pseudo number-resolving photon detection characterising the output distribution shows that this first combination of scalable sources and reconfigurable photonic circuits compares favourably in performance with respect to previous implementations. A detailed loss-budget shows that merging solid-state based multi-photon sources and reconfigurable photonic chips could allow ten-photon experiments on chip at ∼40 Hz rate in a foreseeable future.
@article{arxiv.1905.00936,
title = {Interfacing scalable photonic platforms: solid-state based multi-photon interference in a reconfigurable glass chip},
author = {C. Antón and J. C. Loredo and G. Coppola and H. Ollivier and N. Viggianiello and A. Harouri and N. Somaschi and A. Crespi and I. Sagnes and A. Lemaître and L. Lanco and R. Osellame and F. Sciarrino and P. Senellart},
journal= {arXiv preprint arXiv:1905.00936},
year = {2025}
}