During the past decade the interaction of light with multiatom ensembles has attracted much
attention as a basic building block for quantum information processing and quantum state …

Cavity quantum electrodynamics (CQED) focuses on understanding the interactions
between matter and the electromagnetic field in cavities at the quantum level,. In the past …

Optical atomic clocks are the most accurate and precise measurement devices of any kind,
enabling advances in international timekeeping, Earth science, fundamental physics, and …

Storage and cooling of highly charged ions require ultra-high vacuum levels obtainable by
means of cryogenic methods. We have developed a linear Paul trap operating at 4 K …

We reported the realization of a 174 Yb+–113 Cd+ bi-species Coulomb crystal comprising
174 Yb+, a heavier ion, as coolant and verified the potential of applying a coolant ion with a …

Quantum interfaces between photons and atomic ensembles have emerged as powerful
tools for quantum technologies. Efficient storage and retrieval of single photons requires …

We report one-dimensional pinning of a single ion by an optical lattice. A standing-wave
cavity produces the lattice potential along the rf-field-free axis of a linear Paul trap. The ion's …

Performing a faithful transfer of an unknown quantum state is a key challenge for enabling
quantum networks. The realization of networks with a small number of quantum links is now …

We demonstrate a general technique to achieve a precise radial displacement of the nodal
line of the radiofrequency (rf) field in a linear Paul trap. The technique relies on the selective …

Light-induced control of ions within small Coulomb crystals is investigated. By intense
intracavity optical standing-wave fields, subwavelength localization of individual ions is …