Large-scale integrated quantum photonics : development and applications

Stefano Paesani

Caterina Vigliar

Jianwei Wang, Stefano Paesani, Yunhong Ding +16 more

The ability to control multidimensional quantum systems is central to the development of advanced quantum technologies. We demonstrate a multidimensional integrated quantum photonic platform able to generate, control, and analyze high-dimensional entanglement. A programmable bipartite entangled system is realized with dimensions 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 previously unexplored quantum applications, such as quantum randomness expansion and self-testing on multidimensional states. Our work provides an experimental platform for the development of multidimensional quantum technologies.

Mark G. Thompson

Quantum photonics has emerged as a promising approach to realizing large-scale and complex quantum technologies. Here we overview recent developments presenting circuits compriging hundreds of photonic components integrated into single coherent quantum systems.

Krishna Thyagarajan