Multi‐Species Trapped‐Ion Quantum Logic

The emergence of quantum control over both internal and external degrees of freedom in single atomic ions has led to breakthroughs across several research fields. Single-ion optical clocks are among the most precise timekeepers available today, and atomic ions are a leading platform for various quantum technologies, including quantum computing and quantum sensing. 

In recent years, the extension of quantum control from single-species experiments to multi-species ensembles has opened new avenues in trapped-ion research, and has already begun to transform many of the aforementioned fields. The advent of quantum logic clocks, most notably the aluminum ion clock, has enabled unprecedented levels of precision. In quantum logic spectroscopy, a non–laser-coolable ion is co-trapped with a laser-coolable ion used for state preparation and detection. Quantum logic spectroscopy has granted access to high-precision laser spectroscopy of otherwise inaccessible systems, such as highly charged ions and molecular ions.

In quantum computing, the use of multiple ion species holds promise for instance by mitigating crosstalk, enabling efficient sympathetic cooling, thereby providing a path toward large-scale trapped-ion quantum computers.

Recently other applications such as quantum logic detection of chemical reactions or reduction of uncertainty in multi-species clocks have been demonstrated. 

This seminar aims to bring together experts from these diverse research areas to explore synergies and foster collaboration in the control of multi-species trapped-ion quantum systems. By addressing shared challenges, such as mixed-species crystal dynamics and the development of efficient quantum logic protocols, we seek to identify synergy and foster collaboration in this rapidly evolving field.

The conference language will be English. The Wilhelm and Else Heraeus-Foundation bears the cost of full-board accommodation for all participants.