# spontaneous parametric down-conversion

> important process in quantum optics, used especially as a source of entangled photon pairs, and of single photons

**Wikidata**: [Q3689728](https://www.wikidata.org/wiki/Q3689728)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Spontaneous_parametric_down-conversion)  
**Source**: https://4ort.xyz/entity/spontaneous-parametric-down-conversion


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)