Implementation of field two-way quantum synchronization of distant clocks across a 7 km deployed fiber link

R Quan, H Hong, W Xue, H Quan, W Zhao, X Xiang… - Optics express, 2022 - opg.optica.org
The two-way quantum clock synchronization has been shown to provide femtosecond-level
synchronization capability and security against symmetric delay attacks, thus becoming a …