TY - JOUR
T1 - Daylight entanglement-based quantum key distribution with a quantum dot source
AU - Basso Basset, Francesco
AU - Valeri, M.
AU - Neuwirth, Julia
AU - Polino, Emanuele
AU - Rota, Michele
AU - Poderini, Davide
AU - Pardo, Claudio
AU - Rodari, G.
AU - Roccia, E.
AU - Covre da Silva, Saimon
AU - Ronco, G.
AU - Spagnolo, Nicoló
AU - Rastelli, Armando
AU - Carvacho, Gonzalo
AU - Sciarrino, Fabio
AU - Trotta, Rinaldo
PY - 2023/4
Y1 - 2023/4
N2 - Entanglement-based quantum key distribution can enable secure communication in trusted node-free networks and over long distances. Although implementations exist both in fiber and in free space, the latter approach is often considered challenging due to environmental factors. Here, we implement a quantum communication protocol during daytime for the first time using a quantum dot source. This technology presents advantages in terms of narrower spectral bandwidth—beneficial for filtering out sunlight—and negligible multiphoton emission at peak brightness. We demonstrate continuous operation over the course of three days, across an urban 270 m-long free-space optical link, under different light and weather conditions
AB - Entanglement-based quantum key distribution can enable secure communication in trusted node-free networks and over long distances. Although implementations exist both in fiber and in free space, the latter approach is often considered challenging due to environmental factors. Here, we implement a quantum communication protocol during daytime for the first time using a quantum dot source. This technology presents advantages in terms of narrower spectral bandwidth—beneficial for filtering out sunlight—and negligible multiphoton emission at peak brightness. We demonstrate continuous operation over the course of three days, across an urban 270 m-long free-space optical link, under different light and weather conditions
UR - https://www.scopus.com/pages/publications/85146661696
U2 - 10.1088/2058-9565/acae3d
DO - 10.1088/2058-9565/acae3d
M3 - Article
SN - 2058-9565
VL - 8
SP - 025002
JO - Quantum Science and Technology
JF - Quantum Science and Technology
IS - 2
M1 - 025002
ER -