Time-Frequency Transfer with Quantum Fields
  Clock synchronisation relies on time-frequency transfer procedures which involve quantum fields. We use the conformal symmetry of such fields to define as quantum operators the time and frequency exchanged in transfer procedures and to describe their transformation under transformations to inertial or accelerated frames. We show that the classical laws of relativity are changed when brought in the framework of quantum theory. 
Marc-Thierry Jaekel (Laboratoire de Physique Th\'eorique de l'Ecole   Normale Sup\'erieure) and Serge Reynaud (Laboratoire K...