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.
2023
31
9437
9447
Murtaza, Ghulam; Colautti, Maja; Hilke, Michael; Lombardi, Pietro; Cataliotti, Francesco Saverio; Zavatta, Alessandro; Bacco, Davide; Toninelli, Costa...espandi
File in questo prodotto:
File Dimensione Formato  
oe-31-6-9437 (1).pdf

accesso aperto

Tipologia: Pdf editoriale (Version of record)
Licenza: Open Access
Dimensione 2.87 MB
Formato Adobe PDF
2.87 MB Adobe PDF

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1329934
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 22
  • ???jsp.display-item.citation.isi??? 17
social impact