Rare-earth dopants are arguably one of the most studied optical centers in solids, with
applications spanning from laser optoelectronics, biosensing, lighting to displays …

Optical quantum memories are essential elements in quantum networks for long-distance
distribution of quantum entanglement. Scalable development of quantum network nodes …

We demonstrate optical probing of spectrally resolved single Nd 3+ rare-earth ions in yttrium
orthovanadate. The ions are coupled to a photonic crystal resonator and show strong …

Quantum networks provide a prospective paradigm to connect separated quantum nodes,
which relies on the distribution of long-distance entanglement and active feedforward control …

Single-photon emitters based on individual atoms or individual atomic-like defects are highly
sought-after components for future quantum technologies. A key challenge in this field is …

We present a quantum repeater scheme that is based on individual erbium and europium
ions. Erbium ions are attractive because they emit photons at telecommunication …

High-dimensional quantum systems expand quantum channel capacity and information
storage space. By implementing high-dimensional quantum logic gates, the speed of …

Rare-earth ions (REIs) doped into solid-state crystal hosts offer an attractive platform for
realizing quantum interconnects that can function as quantum memories and quantum …

We design a quantum repeater architecture using individual 167 Er ions doped into Y 2 SiO
5 crystal. This ion is a promising candidate for a repeater protocol because of its long …

We propose a resource-efficient error-rejecting entangled-state analyzer for polarization-
encoded multiphoton systems. Our analyzer is based on two single-photon quantum …