Quantum cryptography describes the use of quantum mechanical effects to perform cryptographic tasks. This is not to be confused with quantum computing or cryptanalysis techniques such as Shor's algorithm.

Quantum cryptography describes the use of quantum mechanical effects to perform cryptographic tasks, this method is alternatively known as quantum communication. These terms are interchangeable in most literature. This is not to be confused with quantum computing or cryptanalysis techniques such as Shor's algorithm.

Quantum Privacy Amplification (often called Quantum Key Distribution) is a sub-topic of Quantum Cryptography.