Man this is cool: The first universal quantum network,

[iamwhatiseem]

Wow...talk about a secure network...

The network’s construction is ingenious. Each node is represented by a single rubidium atom, trapped inside a reflective optical cavity. These atoms communicate with each other by emitting a single photon over an optical fiber. Each atom is a quantum bit — a qubit — and the polarization of the photon emitted carries the quantum state of the qubit.

The first universal quantum network | ExtremeTech