Abstract
Quantum communication networks exploit single photons to generate secure encryption keys and can have very tight timing requirements [1]. These synchronization requirements are met through highly stable references, but there is ongoing research on using only single photons to enable synchronization [2,5] by describing the performance of the synchronization approach and evaluating it on a 1.7 km free space and a 70 km deployed intercity fiber link. We demonstrate time deviations of 100 ps (1.7 km free-space link) and 174 ps (70 km fiber-link) at integration times of 1 second with only crystal oscillators, which is slightly larger than 54 ps in a lab environment (Fig. 1(a)). Our results provide advances towards a strong, independent, and secure quantum communication network without external hardware and a reliable operation under versatile link scenarios.
© 2023 IEEE
PDF ArticleMore Like This
F. Basso Basset, M. Valeri, J. Neuwirth, E. Polino, M. B. Rota, D. Poderini, C. Pardo, G. Rodari, E. Roccia, S. F. Covre da Silva, G. Ronco, N. Spagnolo, A. Rastelli, G. Carvacho, F. Sciarrino, and R. Trotta
eb_5_3 European Quantum Electronics Conference (EQEC) 2023
Stefania Sciara, Hao Yu, Mario Chemnitz, Nicola Montaut, Bennet Fischer, Benjamin Crockett, Benjamin Wetzel, Brent E. Little, Sai T. Chu, David J. Moss, José Azaña, Zhiming Wang, and Roberto Morandotti
FM4E.5 CLEO: Fundamental Science (CLEO:FS) 2023
Thomas Jennewein, Ramy Tannous, Wilson Wu, Dogan Sinar, Stéphane Vinet, Alexandra Kirillova, Shihan Sajeed, Alexander Ling, and Chithrabhanu Perumangatt
QW3A.2 Quantum 2.0 (QUANTUM) 2023