Programmable Photonic Nonlinearity for Quantum Simulation
Ying Wang, Kasper H. Nielsen, Edward C. R. Deacon, Patrik I. Sund, Zhe Liu, Sven Scholz, Arne Ludwig, Leonardo Midolo, Anders Søndberg Sørensen, Stefano Paesani, Peter Lodahl · 2024
Light-matter interaction at the quantum level provides a versatile interface driving photonic quantum technologies toward practical applications. We demonstrate multi-mode photonic circuits that enable precise programming of linear and nonlinear phase configurations at the single-photon level. The nonlinearity operation is realized using a solid-state quantum emitter, a self-assembled quantum dot, integrated into a nanophotonic device. The quantum dot interfaces with a temporal linear optical interferometer, creating a programmable nonlinear photonic platform that is necessary for implementing quantum protocols that require strong nonlinearities, such as the quantum simulation of anharmonic molecular dynamics.