Quantum Key Distribution With an Integrated Photonic Receiver
- URL: http://arxiv.org/abs/2310.16702v1
- Date: Wed, 25 Oct 2023 15:19:19 GMT
- Title: Quantum Key Distribution With an Integrated Photonic Receiver
- Authors: Giulia Guarda, Domenico Ribezzo, Tommaso Occhipinti, Alessandro
Zavatta, Davide Bacco
- Abstract summary: Photonic integrated circuits (PICs) are key in advancing quantum technologies for secure communications.
We implement a three-state BB84 protocol with decoy-state method to enhance quantum communications.
One of the most notable results is the extraction of a secret key over a record-breaking 45 dB channel attenuation.
- Score: 41.94295877935867
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Photonic integrated circuits (PICs) are key in advancing quantum technologies
for secure communications. They offer inherent stability, low losses and
compactness compared to standard fiber-based and free-space systems.
Our reasearch demonstrates PIC's effectivness in enhancing quantum
communications, implementing a three-state BB84 protocol with decoy-state
method. We employ an integrated receiver and superconducting nanowire single
photon detectors (SNSPDs) to achieve technological advancements.
One of the most notable results is the extraction of a secret key over a
record-breaking 45 dB channel attenuation. Our results demonstrate a remarkable
220% boost in key rate compared to our prototype fiber-based receiver over a 10
dB channel attenuation. This improvement in the secret key rate (SKR) signifies
the potential of integrated photonics to advance the field of quantum
communication.
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