We report on an elementary quantum network of two atomic ions separated by 230 m. The
ions are trapped in different buildings and connected with 520 (2) m of optical fiber. At each …

A single-photon source is an enabling technology in device-independent quantum
communication, quantum simulation,, and linear optics-based and measurement-based …

A quantum repeater node is presented based on trapped ions that act as single-photon
emitters, quantum memories, and an elementary quantum processor. The node's ability to …

Experimental results are presented on the efficiency limits for a quantum interface between a
matter-based qubit and a photonic qubit. Using a trapped ion in an optical cavity, we obtain …

We study the performance (rate and fidelity) of distributing multipartite entangled states in a
quantum network through the use of a central node. Specifically, we consider the scenario …

Cavity-enhanced single quantum dots (QDs) are the main approach towards ultra-high-
performance solid-state quantum light sources for scalable photonic quantum technologies …

Quantum teleportation enables the deterministic exchange of qubits via lossy channels.
While it is commonly believed that unconditional teleportation requires a preshared …

Resonance fluorescence from a quantum emitter is an ideal source to extract
indistinguishable photons. By using the cross-polarization to suppress the laser scattering …

Quantum networks that allow generating entangled states between distant qubits have
enormous scientific and applied potential. They can be used for secure quantum …

Backward-wave three-wave mixing is a difficult χ^(2) interaction to observe, because it
requires ultrashort poling periods to achieve phasematching. Having realized sub …