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...the uncertainty in the evaluation of the frequency shift caused in the cs hyperfine transition by the alternating...is presently the dominant term in the accuracy budget of cs fountain frequency standards. the bias is calculated with a formula wherein it is proportional...
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...a new laser-cooled cs fountain primary frequency standard has been constructed at the national institute of standards and technology (nist) in boulder, co. the new standard, nist-f1, is described here...
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Filippo Levi, Claudio Calosso, Davide Calonico, Luca Lorini, Elio K. Bertacco, Aldo Godone, Giovanni A. Costanzo, Barbara Mongino, Steven R. Jefferts, Thomas P. Heavner, Elizabeth A. Donley
...the new twin laser-cooled cs fountain primary frequency standards nist-f2 and it-csf2...design features. most significant is a cryogenic microwave interrogation region which dramatically reduces the blackbody radiation shift. we present as well a preliminary accuracy evaluation of it-csf2....
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...in this paper we report the accuracy evaluation of the italian primary frequency standard ien-csf1. we discuss the shifts the frequency standard is corrected for and the procedure used for the accuracy evaluation. in the last section we report...
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...been many attempts at coping with this issue, recent developments in the area of compressive sensing (cs) provide a new and attractive perspective. since...application layer erasure coding strategy for recovering missing data. we show that cs erasure encoding (csec) with random sampling is efficient for handling missing data in erasure chan- nels, paralleling the...
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...allow extremely high stability using a large number of atoms and...recent demonstrations of improved stability for large numbers of atoms. possible...