BACKGROUND The past two decades have seen intense efforts aimed at building quantum
computing hardware with the potential to solve problems that are intractable on classical …

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 …

Monolithic integration of control technologies for atomic systems is a promising route to the
development of quantum computers and portable quantum sensors,,–. Trapped atomic ions …

Electric-field noise near surfaces is a common problem in diverse areas of physics and a
limiting factor for many precision measurements. There are multiple mechanisms by which …

We present a method for achieving high fidelity state preparation and measurement (SPAM)
using trapped ion hyperfine qubits with nuclear spins higher than I= 1/2. The ground states …

Atomic ions trapped in electromagnetic potentials have long been used for fundamental
studies in quantum physics. Over the past two decades, trapped ions have been …

We report the design, fabrication and characterization of a microfabricated surface-electrode
ion trap that supports controlled transport through the two-dimensional intersection of linear …

Scaling trapped-ion quantum computing will require robust trapping of at least hundreds of
ions over long periods, while increasing the complexity and functionality of the trap itself …

Trapped-ion quantum-information processors offer many advantages for achieving high-
fidelity operations on a large number of qubits, but current experiments require bulky …

We report the electromagnetically induced transparency (EIT) cooling of Ba+ 137 ions with a
nuclear spin of I= 3/2, which are a good candidate of qubits for future large-scale trapped-ion …