Can you make quantum entangled photons using garbage and fertilizer?
Quantum entanglement is one of the weirdest physical phenomena. If you take 2 linked particles and mess with 1 of them, no matter how far away it’s partner is, it will also be instantly affected. But making entangled particles isn’t magic, nor does it require a super expensive and complicated machine. All that’s required is a laser, a non linear crystal and a bit of ingenuity. And all of that can be made out of garbage.
In this video we built a simple DIY laser called a TEA laser, and shoot it through a crystal made of a common fertilizer to produce some entangled photons. The trick though is detected those photons and our first attempt was a failure. But with the groundwork laid, we can iterate and improve until we confirm the measurement. So it’s not that the photons weren’t produced, they almost certainly were. Just so few were captured by my camera they were obscured by noise.