One of the most formidable challenges of scaling up quantum computers is that of control-
signal delivery. Today's small-scale quantum computers typically connect each qubit to one …

The Quantum Scientific Computing Open User Testbed (QSCOUT) at Sandia National
Laboratories is a trapped-ion qubit system designed to evaluate the potential of near-term …

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 …

One of the most effective ways to advance the performance of quantum computers and
quantum sensors is to increase the number of qubits or quantum resources in the system. A …

Experiments with trapped ions and neutral atoms typically employ optical modulators in
order to control the phase, frequency, and amplitude of light directed to individual atoms …

Trapped atomic ions are natural candidates for quantum information processing and have
the potential to realize or improve quantum computing, sensing, and networking. These …

Shuttling ions at high speed and with low motional excitation is essential for realizing fast
and high-fidelity algorithms in many trapped-ion-based quantum computing architectures …

The optimization of the parameters of laser cooling and the investigation of the heating rate
in ion traps require the measurement of the temperature of ion chains for which the Lamb …

Radio-frequency (RF) carpets with ultra-fine pitches are examined for ion transport in gases
at atmospheric pressures and above. We develop new analytic and computational methods …

Surface ion traps with two-dimensional layouts of trapping regions are natural architectures
for storing large numbers of ions and supporting the connectivity needed to implement …