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We discuss the minimization of the Dick effect in an optical lattice clock. We show that optimizing the time sequence of operation of the clock can lead to a significant reduction of the clock stability degradation by the frequency noise of the interrogation laser. By using a nondestructive detection of the atoms, we are able to recycle most of the atoms between cycles and consequently to strongly reduce the time spent capturing the atoms in each cycle. With optimized parameters, we expect a fractional Allan deviation better than 2 ?? 10-16??-1/2 for the lattice clock.
Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on (Volume:57 , Issue: 3 )
Date of Publication: March 2010