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V. Giovannetti, S. Lloyd,
L. Maccone, M. S. Shahriar
Physical
Review A 65 (6): art. no. 062319 June 2002
Abstract
Clock synchronization
procedures are analyzed in the presence of imperfect communications.
In this context we show that there are physical limitations, which
prevent one from synchronizing distant clocks when the intervening
medium is completely dephasing, as in the case of a rapidly varying
dispersive medium.
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