Control of Multiphoton Quantum Dynamics in Photonic Networks

Control of Multiphoton Quantum Dynamics in Photonic Networks: We are using our bright sources of spontaneous parametric down-conversion to explore fundamental physics that can only be studied in multiparticle systems. We are using waveguide lattices to explore multiphoton Hong-Ou-Mandel effects. The unique nonclassical features produced by multiphoton quantum interference among photons prepared in different quantum superpositions have important implications for quantum random walks and boson sampling. The Quantum Photonics Group is also performing research along this direction. We are also exploring the possibility of using exceptional points to protect multiphoton states and to increase the sensitivity of protocols that rely on multiphoton interference.