How is [[quantum information]] stored in practice? This question is readily answered for [[classical information]], where we only have to store classical [[Bit|bits]] like 0 or 1. We can encode them as “current flowing/no current flowing” or even simpler as black and white cards. For [[quantum information]], we have to find a system that can stay in a [[superposition]] for a long time without losing the [[quantum information]]. In general, we can distinguish between platforms that store [[Quantum Information|quantum information]] with [[Qubit|qubits]] in rest (most of them) or [[Qubit|qubits]] in motion. Platforms with moving qubits are are an essential part of [[Quantum Communication|quantum communication]]. Some of the most prominent systems are listed below (explaining all of them would be a bit beyond the scope of this short summary). There are different ways to group different platforms. One way is to group them with AMO (atomic, molecular and optical) platforms and solid state platforms. This grouping stems mostly from an established grouping in condensed matter physics. ![[platforms.excalidraw.light.svg]] AMO platforms: - [[Platform - Cold Atoms]] - [[Platform - Ions]] - [[Platform - Photons]] Solid State Platforms: - [[Platform - Superconducting Circuits]] - [[Platform - Quantum Dots]] - [[Platform - NV Centers]] >[!read]- Further Reading >- [[Quantum Mechanics]] >- [[Qubit]] >[!ref]- References