C

Calcite (calite) crystal

Tool / Product

Crystal used to split light into two paths, enabling either which-way measurement or erasure depending on orientation.

Mentioned in 1 video

We Were WRONG About the Quantum Eraser! ft. @LookingGlassUniverse​

We Were WRONG About the Quantum Eraser! ft. @LookingGlassUniverse​

PBS Space Time

Crystal used to split light into two paths, enabling either which-way measurement or erasure depending on orientation.