From June 11 to June 12, Professor Claude Fabre, from University Pierre et Marie Curie-Paris 6, France visited the National Time Service Center for an academic tour.  

        Professor Claude Fabre is a distinguished international scientist, who works actively at the frontiers of quantum information technology. During the visit, Professor Claude Fabre gave a lecture entitled “Quantum optical frequency combs: a promising tool for quantum information processing and high sensitivity time/frequency metrology”. In this lecture, he demonstrated the genuine highly multipartite quantum entanglement property of an ultrafast highly multimode frequency comb, which has been generated by parametric down-conversion. Such a quantum state of light has promising applications in wavelength multiplexed quantum information processing and computing, and in time/frequency measurements beyond the standard quantum limit.