Quantum Teleportation

Beam me up Sco... BOB!

This sentence that we all know from Star Trek laid the grounds for what we understand for teleportation. Quantum teleportation might sound even more fascinating than our idea of teleportation but you will learn that it doesn't really looks like you'd think:

In this video an explanation of quantum teleportation is exemplified. Note that it is not the particle (or carrier) that is teleported (like you would expect from Star Trek) but merely the information that this carrier has, and it is teleported to an already existing different particle. It is because the teleportation of information doesn't happen through a quantum channel but through classical internet or just a phone call, that we call it as such instead of transmission of quantum information. We have indeed managed to teleport the information from one carrier to another one using only the power of entanglement and a phonecall.

The measurement that Alice is performing is called a Bell State measurement (or BSM) and upon projection the 2 rotations that Bob will need to apply to reconstruct Alice's information are revealed.

It is important to know that this teleportation procedure is basic when operating in quantum networks. What do you think would happen if Alice´s particle is also maximally entangled with another 4th Qubit? Entanglement swap!