2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89146I consider quantum protocols for clock synchronization, and investigate in particular whether entanglement distillation or quantum error-correcting codes can improve the robustness of these protocols. I also draw attention to some unanswered questions about the relativistic theory of quantum measurement. This paper is based on a talk given at the NASA-DoD Workshop on Quantum Information and Clock Synchronization for Space Applications (QuICSSA), September 25-26, 2000.8 pages, 5 figures, REVTeX and epsfQuantum Physicstext