Shortwave DPS-QKD Employing a SiN Micro-Ring Resonator as Compact Quantum State Analyser
Florian Honz (1), Paul M\"ullner (1), Michael Hentschel (1), Stefan, Nevlacsil (1), Jochen Kraft (2), Martin Sagmeister (2), Philip Walther (3),, Rainer Hainberger (1), Bernhard Schrenk (1) ((1) AIT Austrian Institute of, Technology, (2) ams-OSRAM AG, (3) University of Vienna
TL;DR
This paper demonstrates a simplified differential phase shift quantum key distribution system using a silicon nitride micro-ring resonator at 852 nm, achieving high raw key rates and secure operation over short distances with telecom fiber.
Contribution
Introduction of a compact SiN micro-ring resonator for DPS-QKD, enabling simplified setup and effective operation at 852 nm with high key rates.
Findings
Raw key rate of 25.3 kb/s achieved.
Secure key extraction feasible at suitable QBER.
Effective short-reach QKD with zero-touch link layouts.
Abstract
We show simplified DPS-QKD using a SiN micro-ring resonator operated at 852 nm. A raw-key rate of up to 25.3 kb/s is reached at a QBER suitable for secure-key extraction. Short-reach QKD operation is maintained for zero-touch link layouts with C-band telecom fiber.
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Taxonomy
TopicsPhotonic and Optical Devices · Analytical Chemistry and Sensors · Optical Network Technologies