The development of scalable, high-fidelity qubits is a key challenge in quantum information
science. Neutral atom qubits have progressed rapidly in recent years, demonstrating …

The robust generation of quantum states in the presence of decoherence is a primary
challenge for explorations of quantum mechanics at larger scales. Using the mechanical …

Trapped ions in radio-frequency traps are among the leading approaches for realizing
quantum computers, because of high-fidelity quantum gates and long coherence times …

We demonstrate co-trap** and sideband cooling of a H 2+-Be 9+ ion pair in a cryogenic
Paul trap. We study the chemical lifetime of H 2+ and its dependence on the apparatus …

The energy levels of hydrogen-like atoms and ions are accurately described by bound-state
quantum electrodynamics (QED). He+ ions have a doubly charged nucleus, which …

Abstract The Einstein classical Weak Equivalence Principle states that the trajectory of a
particle is independent of its composition and internal structure when it is only submitted to …

We describe the design, commissioning, and operation of an ultra-low-vibration closed-cycle
cryogenic ion trap apparatus. One hundred lines for low-frequency signals and eight …

A cryogenic radio-frequency ion trap system designed for quantum logic spectroscopy of
highly charged ions (HCI) is presented. It includes a segmented linear Paul trap, an in …

Trapped Rydberg ions are a promising new system for quantum information processing.
They have the potential to join the precise quantum operations of trapped ions and the …

Cooling and detection schemes using laser cooling and methods of quantum logic can
contribute to high precision CPT symmetry tests in the baryonic sector. This work introduces …