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 …

Entanglement is an important resource for quantum technologies. There are many ways
quantum systems can be entangled, ranging from the two-qubit case to entanglement in …

Universal control of multiple qubits—the ability to entangle qubits and to perform arbitrary
individual qubit operations—is a fundamental resource for quantum computing, simulation …

Quantum information processing systems rely on a broad range of microwave technologies
and have spurred development of microwave devices and methods in new operating …

The availability of a universal quantum computer may have a fundamental impact on a vast
number of research fields and on society as a whole. An increasingly large scientific and …

We use electronic microwave control methods to implement addressed single-qubit gates
with high speed and fidelity, for Ca+ 43 hyperfine “atomic clock” qubits in a cryogenic (100 …

Moving trapped-ion qubits in a microstructured array of radiofrequency traps offers a route
toward realizing scalable quantum processing nodes. Establishing such nodes, providing …

Trapped-ion quantum information processors store information in atomic ions maintained in
position in free space by electric fields. Quantum logic is enacted through manipulation of …

STIRAP (stimulated Raman adiabatic passage) is a powerful laser-based method, usually
involving two photons, for efficient and selective transfer of populations between quantum …

Microwave trapped-ion quantum logic gates avoid spontaneous emission as a fundamental
source of decoherence. However, microwave two-qubit gates are still slower than laser …