Enabling Hybrid Two-Photon Interference with a Time Lens

Single-photon indistinguishability is a crucial property for many photonic quantum technologies, as it directly affects the visibility of two-photon interference [1], which is used for entanglement swapping, quantum teleportation etc. It is critical for experiments involving quantum information exchange between two mismatched systems such as different photon source types [2] or for quantum repeaters.