Secure BB84-type quantum key distribution with simple phase error formula

Abstract

BB84-based quantum key distribution system is limited in high speed and chip integration due to the requirement of four states preparation and measurement. Recently, the simplified BB84 protocol with only three states preparation and measurement has showed the approximate secret key rate with standard BB84. However, the security proof is only valid under the collective attack and requires the basis-independent detection efficiency condition. Here, we provide a security proof against the coherent attack, which simultaneously removes the basis-independent detection efficiency condition. Importantly, the phase error rate formula is quite simple through a subtle observation. We expect that the simplified BB84 protocol with decoy-state method can be widely implemented in reality.

arXiv commentThis protocol cannot resist coherent attacks with the current phase error rate

References in corpus (24)

• Mixed State Entanglement and Quantum Error Correction
• Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
• Good Quantum Error-Correcting Codes Exist
• Decoy State Quantum Key Distribution
• Measurement-device-independent quantum key distribution
• Unconditional Security Of Quantum Key Distribution Over Arbitrarily Long Distances
• Beating the PNS attack in practical quantum cryptography
• Multiple Particle Interference and Quantum Error Correction
• Measurement device independent quantum key distribution over 404 km optical fibre
• Satellite-relayed intercontinental quantum network
• Secure quantum key distribution over 421 km of optical fiber
• Provably-Secure and High-Rate Quantum Key Distribution with Time-Bin Qudits
• Quantum cryptography without detector vulnerabilities using optically-seeded lasers
• Loss-tolerant quantum cryptography with imperfect sources
• Long-distance quantum key distribution secure against coherent attacks
• Metropolitan quantum key distribution with silicon photonics
• On the performance of two protocols: SARG04 and BB84
• Security proof of a three-state quantum key distribution protocol without rotational symmetry
• Security proof for a simplified BB84-like QKD protocol
• A directly phase-modulated light source
• Method for decoupling error correction from privacy amplification
• Quantum key distribution using different-frequency photons
• Quantum Cryptography Based on the Time--Energy Uncertainty Relation
• Quantum cryptography based on photon ``frequency'' states: example of a possible realization