[[Quantum Information|Quantum information]] can be stored in the energy levels of [[Ion|ions]]. We choose two distinct energy levels with a given energy difference and address this energy difference with [[Laser|lasers]] to read and write quantum information. In comparison to [[Platform - Cold Atoms|cold atoms]], ions are usually not held in place with [[Optical Lattice|optical lattices]] or [[Laser Tweezer|laser tweezers]], but with [[Electric Field|electric fields]]. Oscillating electric fields prevent the electrically charged ions from moving. The stationary ions can subsequently addressed with lasers. Most commonly, ions are trapped in one-dimensional geometries since this is the most natural way to build a trap. Due to their mutual Coulomb repulsion, trapped ions interact over long distances. Quantum information may be transferred through their collective motion in a shared trap, which is a consequence of their mutual interaction. Thus, [[Entanglement|entanglement]] can be more easily distributed across all [[Qubit|qubits]] at once. >[!read]- Further Reading >- [[Ion]] >- [[Platform - Cold Atoms]] >[!ref]- References