*Photons* are the main carrier of [[Quantum Information|quantum information]] over large distances. In comparison to [[Platform - Cold Atoms| cold atoms]], [[Platform - Ions|ions]] or other solid-state platforms, [[Photon|photons]] move with the [[Speed of Light|speed of light]]. This is a decisive advantage in [[Quantum Communication|quantum communication]] applications. The [[Quantum Information|quantum information]] is either encoded in the [[Polarization|polarization]] of the individual photon or in a so-called time-binning. Time-binning refers to the idea that a [[Photon|photon]] can be in a [[Superposition|superposition]] of arriving at a given time or slightly earlier or later. This idea of a temporal superposition can be used to encode quantum information. However, photons are not only considered for quantum communication, they are also a platform for [[Quantum Computer|quantum computations]]. While single-[[Qubit|qubit]] gate are easy to realize, multi-qubit gates are much more challenging since photons do not naturally interact with each other. >[!read]- Further Reading >- [[Photon]] >- [[Quantum Communication]] >- [[Electromagnetism]] >[!ref]- References