Tight finite-key analysis for passive decoy-state quantum key distribution under general attacks
arXiv:1406.0387 · doi:10.1103/PhysRevA.89.052328
Abstract
For quantum key distribution (QKD) using spontaneous parametric-down-conversion sources (SPDCSs), the passive decoy-state protocol has been proved to be efficiently close to the theoretical limit of an infinite decoy-state protocol. In this paper, we apply a tight finite-key analysis for the passive decoy-state QKD using SPDCSs. Combining the security bound based on the uncertainty principle with the passive decoy-state protocol, a concise and stringent formula for calculating the key generation rate for QKD using SPDCSs is presented. The simulation shows that the secure distance under our formula can reach up to 182 km when the number of sifted data is . Our results also indicate that, under the same deviation of statistical fluctuation due to finite-size effects, the passive decoy-state QKD with SPDCSs can perform as well as the active decoy-state QKD with a weak coherent source.
9 pages, 2 figures
References in corpus (14)
- Device-independent security of quantum cryptography against collective attacks
- Hacking commercial quantum cryptography systems by tailored bright illumination
- Quantum teleportation using active feed-forward between two Canary Islands
- Quantum cryptography with finite resources: unconditional security bound for discrete-variable protocols with one-way post-processing
- Post-selection technique for quantum channels with applications to quantum cryptography
- Proposal for Implementing Device-Independent Quantum Key Distribution based on a Heralded Qubit Amplification
- Semi-device-independent security of one-way quantum key distribution
- 2-GHz clock quantum key distribution over 260 km of standard telecom fiber
- Simple and efficient quantum key distribution with parametric down-conversion
- Upper bounds of eavesdropper's performances in finite-length code with decoy method
- Passive decoy state quantum key distribution: Closing the gap to perfect sources
- Quantum key distribution with triggering parametric down conversion sources
- Experimental quantum key distribution with finite-key security analysis for noisy channels
- Min-entropy and quantum key distribution: non-zero key rates for "small" numbers of signals