Authors: Mirko Pittaluga, Yuen San Lo, Adam Brzosko, Robert I. Woodward, Matthew S. Winnel, Thomas Roger, James F. Dynes, Kim A. Owen, Sergio Juarez, Piotr Rydlichowski, Domenico Vicinanza, Guy Roberts, Andrew J. Shields

Published on: May 20, 2024

Impact Score: 7.6

Arxiv code: Arxiv:2405.11990

Summary

• What is new: Introduction of new architecture and techniques for coherent quantum communications integrated within a commercial telecom network.
• Why this is important: Challenges in preserving optical coherence and integrating advanced single-photon detectors for quantum communications.
• What the research proposes: Implementation of the Twin Field Quantum Key Distribution protocol with non-cryogenically cooled detectors and measurement-device-independent properties.
• Results: Achieved encryption key distribution at 110 bit/s over 254 km, marking the longest practical quantum key distribution deployment and validating the feasibility of a phase-based quantum internet.

Technical Details

Technological frameworks used: Twin Field Quantum Key Distribution protocol

Models used: Measurement-device-independent model

Data used: Encryption key distribution data from a 254 km deployment between Frankfurt and Kehl

Potential Impact

Telecommunication companies, security software developers, network infrastructure providers

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