Security of the decoy-state BB84 protocol with imperfect state preparation
arXiv:2310.01610 · doi:10.3390/e25111556
Abstract
The quantum key distribution (QKD) allows two remote users to share a common information-theoretic secure secret key. In order to guarantee the security of a practical QKD implementation, the physical system has to be fully characterized and all deviations from the ideal protocol due to various imperfections of realistic devices have to be taken into account in the security proof. In this work, we study the security of the efficient decoy-state BB84 QKD protocol in the presence of source flaws, caused by imperfect intensity and polarization modulation. We investigate the non-Poissonian photon-number statistics due to coherent-state intensity fluctuations and the basis-dependence of the source due to non-ideal polarization state preparation. The analysis is supported by experimental characterization of intensity and phase distributions.
arXiv comment22 pages, 7 figures
References in corpus (33)
- Quantum cryptography: Public key distribution and coin tossing
- Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
- 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
- Security Aspects of Practical Quantum Cryptography
- Practical Decoy State for Quantum Key Distribution
- Security against individual attacks for realistic quantum key distribution
- Loss-tolerant quantum cryptography with imperfect sources
- Secure quantum key distribution with an uncharacterized source
- Unconditionally Secure Key Distribution Based on Two Nonorthogonal States
- Improved key rate bounds for practical decoy-state quantum key distribution systems
- General theory of decoy-state quantum cryptography with source errors
- Security of decoy-state quantum key distribution with inexactly controlled source
- Decoy-state quantum key distribution with both source errors and statistical fluctuations
- Decoy-state quantum key distribution with a leaky source
- Experimental quantum key distribution with source flaws
- Decoy state quantum key distribution with imperfect source
- Experimental Measurement-Device-Independent Quantum Key Distribution with Imperfect Sources
- Quantum key distribution with correlated sources
- Fully-Passive Quantum Key Distribution
- Finite-key security analysis of quantum key distribution with imperfect light sources
- Finite-key security analysis for quantum key distribution with leaky sources
- Security of the decoy state method for quantum key distribution
- Low loss QKD optical scheme for fast polarization encoding
- Quantum key distribution with setting-choice-independently correlated light sources
- A fully passive transmitter for decoy-state quantum key distribution
- Characterisation of state-preparation uncertainty in quantum key distribution
- Practical issues in decoy-state quantum key distribution based on the central limit theorem
- Asymmetric adaptive LDPC-based information reconciliation for industrial quantum key distribution
- Security bounds for decoy-state QKD with arbitrary photon-number statistics
- Finite-key analysis of loss-tolerant quantum key distribution based on random sampling theory