Presented by Francisco Girela (SAFRAN GROUP)
Every quantum node in the network is spatially distributed, forcing independent receivers to evaluate network performance and perform quantum communications. High accuracy distributed timing synchronization presents a critical technical challenge as it needs to coexist with quantum channels.
For photon coincidence counting, preserve coherence between faint quantum signals or observing Hong-Ou-Mandel (HOM) effects, all time-to-digital converters in the network must be synchronized to extend quantum networking experiments to the field.
White Rabbit (WR) is a synchronization technology first introduced by the European Organization for Nuclear Research (CERN).
WR technology ensures sub-nanosecond time synchronization accuracy using optical fiber and frequency distribution with sub-picosecond precision.
This technology has been widely adopted in scientific applications and several commercial industries. Now, it is starting to be used in Quantum Networks.