Christian F. Roos

TL;DR: In this paper, the authors present a review of experiments in controlling and manipulating trapped atomic ions, together with the methods and tools that have enabled them, and provide an outlook on future directions in the field.

TL;DR: The scalable and deterministic generation of four-, five-, six-, seven- and eight-particle entangled states of the W type with trapped ions are reported, which obtain the maximum possible information on these states by performing full characterization via state tomography, using individual control and detection of the ions.

TL;DR: Deterministic quantum-state teleportation between a pair of trapped calcium ions is reported, demonstrating unequivocally the quantum nature of the process.

TL;DR: In this article, the authors review recent experimental advances towards a quantum computer with trapped ions and present some implementations of quantum algorithms such as deterministic teleportation of quantum information and an error correction scheme.

TL;DR: This work combines multi-qubit gates with optical pumping to implement coherent operations and dissipative processes and illustrates the ability to engineer the open-system dynamics through the dissipative preparation of entangled states, the simulation of coherent many-body spin interactions, and the quantum non-demolition measurement of multi- qubit observables.