The ability to control multidimensional quantum systems is key for the investigation of fundamental science and for the development of advanced quantum technologies. Here we demonstrate a multidimensional integrated quantum photonic platform able to robustly generate, control and analyze high-dimensional entanglement. We realize a programmable bipartite entangled system with dimension up to 15×15 on a large-scale silicon-photonics quantum circuit. The device integrates more than 550 photonic components on a single chip, including 16 identical photon-pair sources. We verify the high precision, generality and controllability of our multidimensional technology, and further exploit these abilities to demonstrate key quantum applications experimentally unexplored before, such as quantum randomness expansion and self-testing on multidimensional states. Our work provides a prominent experimental platform for the development of multidimensional quantum technologies.
@article{arxiv.1803.04449,
title = {Multidimensional quantum entanglement with large-scale integrated optics},
author = {Jianwei Wang and Stefano Paesani and Yunhong Ding and Raffaele Santagati and Paul Skrzypczyk and Alexia Salavrakos and Jordi Tura and Remigiusz Augusiak and Laura Mančinska and Davide Bacco and Damien Bonneau and Joshua W. Silverstone and Qihuang Gong and Antonio Acín and Karsten Rottwitt and Leif K. Oxenløwe and Jeremy L. O'Brien and Anthony Laing and Mark G. Thompson},
journal= {arXiv preprint arXiv:1803.04449},
year = {2018}
}