I've been on a deep dive for several days and am prepared to report my findings. I will try to walk you through this in an order that will help you wrap your mind around this.
Be advised I'm not a mathematician so my normie understanding of all of this could be extremely flawed.
QUANTUM INTERNET and ENTANGLEMENT
Quantum computing and quantum internet use Quantum Mechanics. Mathematically these theories have existed for several decades and in more recent decades have been proven and used in Quantum computing.
A bit in computing can be either 0 or 1. Yes or No. There is no other state. A Qubit (quantum bit) can be both, or neither, in varying degrees.
https://en.wikipedia.org/wiki/Qubit
More interesting is the idea of Quantum Entanglement, another technology that seems impossible. By entangling two Qubits, they will always mirror each other. Therefore if I am holding a Qubit and you are holding a Qubit entangled with mine, they will always show the same value REGARDLESS OF WHERE THEY EXIST IN SPACE OR TIME.
This is how the Quantum Internet will function. With entangled Qubits, there is no signal for the bits to change. There is no method to intercept the message. It is by its nature secure.
https://www.youtube.com/watch?v=XzPi29O6DAc
" Quantum entanglement is a physical phenomenon that occurs when a pair or group of particles are generated, interact, or share spatial proximity in a way such that the quantum state of each particle of the pair or group cannot be described independently of the state of the others, including when the particles are separated by a large distance. …
Einstein and others considered such behavior to be impossible, as it violated the local realism view of causality (Einstein referring to it as “spooky action at a distance”)…
Quantum entanglement has been demonstrated experimentally with photons, neutrinos, electrons…"
https://www.ncregister.com/blog/quantum-mechanics-and-power-of-god