Quantum key distribution (QKD) is the mostly-unused, super-secure protocol that even defeats the big nosy ears of the NSA. But QKD is quite difficult to get right. And, just like with classical ...

MicroCloud Hologram Inc. proposes a high-dimensional quantum key distribution protocol, enhancing security and information efficiency in quantum transmission.

--MicroCloud Hologram Inc.,, a technology service provider, they announced the proposal of an efficient high-dimensional quantum key distribution protocol for quantum transmission based on quantum ...

In order to break down the complexity of the protocol, we will approach it in five steps: Step 1: Kerberos authentication is based on symmetric key cryptography.

U.K. start-up Arqit expects to launch a worldwide service for sharing unbreakable quantum-encrypted messages using satellites in 2023.

It opens up new possibilities for long-distance quantum key distribution and paves the way for the realization of high-speed intercity quantum communication networks.