Unconditional Security of Practical Quantum Key Distribution

Abstract

We present an extension of the first proof for the unconditional security of the BB84 quantum key distribution protocol which was given by Mayers. We remove the constraint that a perfect BB84 quantum source is required and the proof given here covers a range of practical quantum sources. Nothing is assumed about the detector except that the efficiency with which signals are detected is basis independent.

36 pages

References in corpus (5)

• Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
• On the Security of Quantum Cryptography Against Collective Attacks
• A Proof of the Security of Quantum Key Distribution
• Security of Quantum Key Distribution Against All Collective Attacks
• Security of quantum key distribution with imperfect devices