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Quantum Simulation With Trapped Ions  

D. Luo and N. M. Linke

Simulating quantum systems using classical computers encounters inherent challenges due to the exponential scaling with system size. To overcome this challenge, quantum simulation uses a well-controlled quantum system to simulate another less controllable system. Over the last 20 years, many physical platforms have emerged as quantum simulators, such as ultracold atoms, Rydberg atom arrays, trapped ions, nuclear spin, superconducting circuits, and integrated photonics. Trapped ions, with induced spin interactions and universal quantum gates, have demonstrated remarkable versatility, capable of both analog and digital quantum simulation. Recent experimental results, covering a range of research areas including condensed matter physics, quantum thermodynamics, high-energy physics, and quantum chemistry, guide this introductory review to the growing field of quantum simulation.


Energy-Efficient Particle Accelerators for Research  

M. Seidel

Particle accelerators are the drivers for large-scale research infrastructures for particle physics but also for many branches of condensed matter research. The types of accelerator-driven research infrastructures include particle colliders, neutron, muon or neutrino sources, synchrotron light sources and free-electron lasers, as well as medical applications. These facilities are often large and complex and have a significant carbon footprint, both in construction and operation. In all facilities grid power is converted to beam power and ultimately to the desired type of radiation for research. The energy efficiency of this conversion process can be optimized using efficient technologies, but also with optimal concepts for entire facilities.