What is quantum key distribution and how does it work?

What is quantum key distribution and how does it work?

Quantum key distribution (QKD) is a secure communication method that uses quantum mechanics to share encryption keys.

How does QKD ensure the security of the keys?

QKD ensures security by using the principles of quantum mechanics, such as superposition and entanglement, to detect eavesdropping.

Can you explain the process of QKD in simple terms?

Sure! In QKD, two parties share quantum bits (qubits) over a channel. If an eavesdropper tries to intercept, the qubits change, alerting the parties.

What are the practical applications of quantum key distribution?

QKD is used in secure communications, banking, and government data transmission, where security is critical.

Are there any limitations to quantum key distribution?

Yes, limitations include distance constraints, the need for specialized equipment, and the current high cost of implementation.