The ability to distribute entangled particles is an enabling technology for a quantum internet. That may explain why Japanese telco NTT is so interested in mastering the technology.
Entanglement is the strange quantum phenomenon in which two particles are so deeply linked that they share the same existence, even though they might be separated by huge distances. In the language of quantum mechanics, both particles are described by a single wave function.
Quantum internet getting closer to reality - Quantum entanglement record of 300km
