Quantum key agreement (QKA) protocols enable two or more remote parties to establish a shared secret key by exploiting fundamental quantum properties. Unlike quantum key distribution, in which one ...

Quantum key distribution (QKD) enables two remote parties to establish information-theoretic secure keys by exchanging quantum states over optical channels. Foundational prepare-and-measure schemes, ...

MicroCloud Hologram Inc. has announced a groundbreaking proposal for a high-dimensional quantum key distribution (QKD) protocol that utilizes quantum Fourier transform and quantum-controlled NOT gate ...

Continuous-variable quantum cryptography has emerged as a significant branch of quantum cryptography, with continuous-variable quantum key distribution (CVQKD) at its core. However, compared to ...

A new method to distribute cryptographic keys using terahertz waves could help enable secure communication in the ...

To keep communications secure in a post-quantum world, cryptographers are digging down into the concept of cause and effect.

Quantum networking is an underappreciated but potentially consequential dimension of U.S.-China quantum competition.

The new DST Task Force report on making India’s digital ecosystems quantum-safe is a product of contemplating a threat that is both long-term and urgent. Today, public-key cryptography underpins ...

Russian scientists have developed a software and hardware complex for secure data transmission in 4G/5G mobile networks based ...

A growing number of quantum engineers worldwide have been trying to realize large-scale quantum networks, which consist of ...

Quantum computers, systems that process and store information leveraging quantum mechanical phenomena, could eventually outperform classical computers on numerous tasks. Among other things, these ...