An entangled qubit is created and half of it is stored at location A, and half of it is stored at location B. That's the insecure part, but once A and B have two halves of the qubit, the rest of the communication is guaranteed secure.
It's amazing that you can make a change to the half at A, and its reflected in the half at B, because they are quantum entangled. Now B has no idea how to interpret the change since it seems random, but A sends a kind of "public key to unlock the data" over the air to B, and B can use that to measure his half and extract the data.
The data is "teleported", but the public key used to read the data is open. The public key itself tells you nothing about the data. It's brilliant.
http://en.wikipedia.org/wiki/Quantum_teleportation
An entangled qubit is created and half of it is stored at location A, and half of it is stored at location B. That's the insecure part, but once A and B have two halves of the qubit, the rest of the communication is guaranteed secure.
It's amazing that you can make a change to the half at A, and its reflected in the half at B, because they are quantum entangled. Now B has no idea how to interpret the change since it seems random, but A sends a kind of "public key to unlock the data" over the air to B, and B can use that to measure his half and extract the data.
The data is "teleported", but the public key used to read the data is open. The public key itself tells you nothing about the data. It's brilliant.
Mind = blown.