What is eavesdropping in quantum cryptography?

What is eavesdropping in quantum cryptography?

Eavesdropping in quantum cryptography refers to the interception of quantum key distribution (QKD) signals, which can compromise the security of the communication.

How does quantum cryptography prevent eavesdropping?

Quantum cryptography uses principles of quantum mechanics, such as superposition and entanglement, to detect eavesdropping. If an eavesdropper tries to intercept the quantum keys, the system will notice disturbances in the quantum states.

What are the implications of successful eavesdropping?

Successful eavesdropping can lead to unauthorized access to sensitive information, undermining the security guarantees provided by quantum cryptography.

Can eavesdropping be completely eliminated?

While quantum cryptography significantly reduces the risk of eavesdropping, it cannot be completely eliminated. Continuous advancements in technology and methods may still pose threats.

What are some real-world applications of quantum cryptography?

Real-world applications include secure communication for financial transactions, government communications, and protecting sensitive data in various industries.