Quantum communication

Definition:
Quantum communication refers to the use of quantum mechanical properties to establish ultra-secure communication channels.

Scientific context:
Unlike classical communication, where security relies on computational assumptions, quantum communication protocols are provably secure based on the laws of quantum physics. The most prominent application is Quantum Key Distribution (QKD), where two parties can generate a shared secret key that cannot be intercepted without detection.

Example in practice:

• Governments and institutions have implemented QKD testbeds over fiber to secure national infrastructure.

• Quantum communication is key to future quantum internet architectures that will connect quantum devices globally.

Media:

Did you know?
Because any attempt to eavesdrop on a quantum channel disturbs the quantum state, quantum communication can detect and counteract surveillance in real time.