Physics

Operating system

Optics

Interferometry

Photonics

Computer science

Mode (computer interface)

Quantum computer

Quantum mechanics

Optoelectronics

Quantum

Materials for Quantum Technology

Photonic processors are pivotal for both quantum and classical information processing tasks using light. In particular, linear optical quantum information processing requires both large-scale and low-loss programmable photonic processors. In this paper, we report the demonstration of the largest universal quantum photonic processor to date: a low-loss 12-mode fully tunable linear interferometer with all-to-all mode coupling based on stoichiometric silicon nitride waveguides.

A universal fully reconfigurable 12-mode quantum photonic processor