Manipulation of entangled states of light using complex scattering process
Saroch Leedumrongwatthanakun, Natalia Herrera Valencia, Vatshal Srivastav, Suraj Goel, Will McCutcheon, Pepijn W. H. Pinkse, Claudio Conti, Mehul Malik · 2022
The development of high-quality photonic sources of high-dimensional entanglement and techniques for their manipulation is crucial for the advancement of quantum technologies. We present an efficient technique for generating and characterizing high-dimensional spatially entangled two-photon states with a record quality, dimensionality, and measurement speed. We demonstrate how to precisely manipulate such states by tailoring reprogrammable optical circuits in complex scattering media consisting of off-the-shelf multimode fiber and spatial light modulation. Our techniques open a clear pathway for the adoption of high-dimensional quantum states of light in the high-capacity, noise-robust quantum networks of tomorrow.