From what I understand, quantum entanglement is used in "secure communications" as a key exchange (more of a distribution, as a third-party is required to distr

From what I understand, quantum entanglement is used in "secure communications" as a key exchange (more of a distribution, as a third-party is required to distribute the entangled photons) (QKD - See: BB84 for example). Following this key exchange phase, normal encryption algorithms are used over traditional infrastructure. This is already being done in real environments. In a real world implementation, you are using this as a key stream, of which interceptions can be detected by certain loss characteristics.