In [[Electromagnetic Wave|electromagnetic wave]], [[Electric Field|electric]] and [[Magnetic Field|magnetic fields]] oscillate perpendicular to the direction of propagation. The direction of oscillation of these fields is called *polarization*. It can be used to encode [[quantum information]]. In everyday life, *polarization* is used in cell phone displays, 3D glasses and sunglasses, for example. >[!read]- Further Reading >- [[Qubit]] >- [[Quantum Information]] >- [[Photon]] >[!ref]- References