# Why splitting a photon in half is impossible

Quantum mechanics dictates that photons, as indivisible quanta of light, cannot be physically split. The article explores the theoretical and experimental attempts to "chop" a photon and why they always fail. This matters because it highlights fundamental principles of quantum physics that limit what is possible with light.

**Importance:** 3/5

## Sources

### Technology
- [Ars Technica](https://arstechnica.com/science/2026/07/what-happens-when-you-try-to-chop-a-photon-in-half/) — Wed, 22 Jul 2026 14:17:08 +0000