Distant clock synchronization using entangled photon pairs
Alejandra Valencia, Giuliano Scarcelli, Yanhua H. Shih · Applied Physics Letters · 2004
We report a proof-of-principle experiment on distant clock synchronization. Besides the achievement of picosecond resolution at 3km distance, this experiment demonstrated a concept for high-accuracy nonlocal timing and positioning based on the quantum feature of entangled states.