Finite-key analysis of high-dimensional time-energy entanglement-based quantum key distribution

Abstract

We present a security analysis against collective attacks for the recently proposed time-energy entanglement-based quantum key distribution protocol, given the practical constraints of single photon detector efficiency, channel loss, and finite-key considerations. We find a positive secure-key capacity when the key length increases beyond $10^4$ for eight-dimensional systems. The minimum key length required is reduced by the ability to post-select on coincident single-photon detection events. Including finite-key effects, we show the ability to establish a shared secret key over a 200 km fiber link.

5 pages, 4 figures

References in corpus (9)

• Quantum key distribution over 25 km with an all-fiber continuous-variable system
• Finite-size analysis of continuous-variable quantum key distribution
• Quantum cryptography with finite resources: unconditional security bound for discrete-variable protocols with one-way post-processing
• Higher-dimensional orbital angular momentum based quantum key distribution with mutually unbiased bases
• Security of continuous-variable quantum key distribution against general attacks
• On Secure Quantum Key Distribution Using Continuous Variables of Single Photons
• Finite-key security against coherent attacks in quantum key distribution
• Single photon continuous variable quantum key distribution based on energy-time uncertainty relation
• Efficient single-spatial-mode periodically-poled KTiOPO_4 waveguide source for high-dimensional entanglement-based quantum key distribution

Cited by in corpus (6)

• Advances in Quantum Cryptography
• Theory of channel simulation and bounds for private communication
• Quantum key distribution overcoming extreme noise: simultaneous subspace coding using high-dimensional entanglement
• Detector-decoy high-dimensional quantum key distribution
• Finite-key analysis of a practical decoy-state high-dimensional quantum key distribution
• Practical high-dimensional quantum key distribution with decoy states