REVIEW 3 cited by
Coexistence of continuous-variable quantum key distribution and classical data over 120-km fiber
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
read the original abstract
Integrating quantum key distribution (QKD) with classical data transmission over the same fiber is crucial for scalable quantum-secured communication. However, noise from classical channels limits QKD distance. We demonstrate the longest-distance continuous-variable QKD (CV-QKD) over 120 km (20 dB loss) in the asymptotic regime, and over 100 km (17 dB loss) in the finite-size regime, both coexisting with a fully populated coarse wavelength division multiplexing system. Natural mode filtering of the local oscillator and phase noise mitigation enabled this without additional filtering or wavelength reallocation. Benchmarking against a commercial discrete-variable QKD system and considering finite-size effects confirms the feasibility of CV-QKD as a plug-and-play solution for typical 80-100 km long-haul optical networks. Our results set a record fiber distance for CV-QKD, showing its potential for cost-effective, large-scale deployment in existing network infrastructure.
Forward citations
Cited by 3 Pith papers
-
Versatile Wavelength-Division Multiplexed Quantum Key Distribution Network Operating Simultaneously in the O and C Bands
Three simultaneously running QKD transmitters in the O and C bands were decoded by one shared polarization-to-time receiver in a six-hour field trial.
-
A Critical Analysis of Deployed Use Cases for Quantum Key Distribution and Comparison with Post-Quantum Cryptography
A security analysis of 11 deployed QKD use cases finds that QKD provides little or no advantage over PQC or pre-shared keys in most scenarios, with only OTP-based short-distance links offering a clear benefit.
-
Capacity and SKR tradeoff in coexisting classical and CV-QKD metropolitan-reach optical links
At moderate power (-1.5 dBm/ch), a band-edge quantum channel with a 100-150 GHz guardband roughly doubles the key rate while incurring half the capacity penalty of band-center placement.
Discussion (0). Continue with ORCID to comment.