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 785 nm. With an estimated maximum SKR of 0.5 Mbps, our solution paves the way for room-temperature single-photon sources for quantum communication protocols.
Efficient room-temperature molecular single-photon sources for quantum key distribution / Murtaza, Ghulam; Colautti, Maja; Hilke, Michael; Lombardi, Pietro; Cataliotti, Francesco Saverio; Zavatta, Alessandro; Bacco, Davide; Toninelli, Costanza. - In: OPTICS EXPRESS. - ISSN 1094-4087. - ELETTRONICO. - 31:(2023), pp. 9437-9447. [10.1364/OE.476440]
Efficient room-temperature molecular single-photon sources for quantum key distribution
Colautti, Maja
;Hilke, Michael;Lombardi, Pietro;Cataliotti, Francesco Saverio;Zavatta, Alessandro;Bacco, Davide;Toninelli, Costanza
2023
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 785 nm. With an estimated maximum SKR of 0.5 Mbps, our solution paves the way for room-temperature single-photon sources for quantum communication protocols.File | Dimensione | Formato | |
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