Unconditional Security of Single-Photon Differential Phase Shift Quantum Key Distribution
arXiv:0806.2684 · doi:10.1103/PhysRevLett.103.170503
Abstract
In this Letter, we prove the unconditional security of single-photon differential phase shift quantum key distribution (DPS-QKD) protocol, based on the conversion to an equivalent entanglement-based protocol. We estimate the upper bound of the phase error rate from the bit error rate, and show that DPS-QKD can generate unconditionally secure key when the bit error rate is not greater than 4.12%. This proof is the first step to the unconditional security proof of coherent state DPS-QKD.
5 pages, 2 figures; shorten the length, improve clarity, and correct typos; accepted for publication in Physical Review Letters
References in corpus (13)
- Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
- Good Quantum Error-Correcting Codes Exist
- Decoy State Quantum Key Distribution
- Unconditional Security Of Quantum Key Distribution Over Arbitrarily Long Distances
- Quantum Key Distribution with High Loss: Toward Global Secure Communication
- Beating the PNS attack in practical quantum cryptography
- Multiple Particle Interference and Quantum Error Correction
- Quantum key distribution over 40 dB channel loss using superconducting single photon detectors
- Unconditionally Secure Key Distribution Based on Two Nonorthogonal States
- Security of differential phase shift quantum key distribution against individual attacks
- Unconditional Security of Three State Quantum Key Distribution Protocols
- Megabits secure key rate quantum key distribution
- Sequential Attack with Intensity Modulation on the Differential-Phase-Shift Quantum Key Distribution Protocol
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- Finite-Key Analysis for Coherent One-Way Quantum Key Distribution
- Information-theoretic security proof of differential-phase-shift quantum key distribution protocol based on complementarity
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- Updating Quantum Cryptography Report ver. 1
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- Security and entanglement in differential-phase-shift quantum key distribution
- Explicit attacks on differential phase shift quantum key distribution