Efficient room-temperature molecular single-photon sources for quantum key distribution

• URL: http://arxiv.org/abs/2202.12635v1
• Date: Fri, 25 Feb 2022 11:52:10 GMT
• Title: Efficient room-temperature molecular single-photon sources for quantum key distribution
• Authors: Ghulam Murtaza, Maja Colautti, Michael Hilke, Pietro Lombardi, Francesco Saverio Cataliotti, Alessandro Zavatta, Davide Bacco and Costanza Toninelli
• Abstract summary: Quantum Key Distribution (QKD) allows the distribution of cryptographic keys between multiple users in an information-theoretic secure way. We introduce and demonstrate a proof-of-concept QKD system exploiting a molecule-based single-photon source operating at room temperature and emitting at 785nm.
• Score: 51.56795970800138
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Quantum Key Distribution (QKD) allows the distribution of cryptographic keys between multiple users in an information-theoretic secure way, exploiting quantum physics. While current QKD systems are mainly based on attenuated laser pulses, deterministic single-photon sources could give concrete advantages in terms of secret key rate (SKR) and security owing to the negligible probability of multi-photon events. Here, we introduce and demonstrate a proof-of-concept QKD system exploiting a molecule-based single-photon source operating at room temperature and emitting at 785nm. With an estimated SKR of 0.5 Mbps, our solution paves the way for room-temperature single-photon sources for quantum communication protocols.

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