Trapped ions are among the most promising systems for practical quantum computing (QC).
The basic requirements for universal QC have all been demonstrated with ions, and …

Quantum networks play an extremely important role in quantum information science, with
application to quantum communication, computation, metrology, and fundamental tests. One …

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 …

The Jaynes–Cummings Model (JCM) has recently been receiving increased attention as
one of the simplest, yet intricately nonlinear, models of quantum physics. Emphasising the …

Quantum technologies exploit entanglement to revolutionize computing, measurements, and
communications. This has stimulated the research in different areas of physics to engineer …

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 …

We demonstrate remote entanglement of trapped-ion qubits via a quantum-optical fiber link
with fidelity and rate approaching those of local operations. Two Sr+ 88 qubits are entangled …

Quantum networks require functional nodes consisting of stationary registers with the
capability of high-fidelity quantum processing and storage, which efficiently interface with …

Optical atomic clocks are our most precise tools to measure time and frequency,–. Precision
frequency comparisons between clocks in separate locations enable one to probe the space …

Optical communication channels have redefined the scope and applications of classical
computing; similarly, photonic transfer of quantum information promises to open new …