Lithium niobate (LN) thin film has received much attention as an integrated photonic
platform, due to its rich and great photoelectric characteristics, based on which various …

Atomic-like emitters in the solid state serve as important resources in the advancement of
future quantum networks. In particular, intra-4f optical transitions of rare earth ions exhibit …

We report on the transmission of telecom photons entangled with a multimode solid-state
quantum memory over a deployed optical fiber in a metropolitan area. Photon pairs were …

Robust spin-photon interfaces with optical transitions in the telecommunication band are
essential for quantum networking technologies. Erbium (Er) ions are the ideal candidate with …

Solid-state atomic defects with optical transitions in the telecommunication bands, potentially
in a nuclear spin free environment, are important for applications in fiber-based quantum …

Quantum memory devices with high storage efficiency and bandwidth are essential
elements for future quantum networks. Solid-state quantum memories can provide …

On-chip optical filters are fundamental components in optical signal processing. While rare-
earth ion-doped crystals offer ultra-narrow optical filtering via spectral hole burning, their …