#Researchers develop a tool for characterizing frequency-entangled photon pairs
“#Researchers develop a tool for characterizing frequency-entangled photon pairs” Credit: CC0 Public Domain Frequency-entangled photon pairs, an easily accessible type of entanglement, have been widely applied in fields like quantum-enhanced positioning and clock synchronization, and quantum spectroscopy. Recently, a research group led by Profs. Dong Ruifang and Zhang Shougang from the National Time Service Center…