Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/101093
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dc.contributor.authorSantarelli, G.-
dc.contributor.authorLaurent, P.-
dc.contributor.authorLemonde, P.-
dc.contributor.authorClairon, A.-
dc.contributor.authorMann, A.G.-
dc.contributor.authorChang, S.-
dc.contributor.authorLuiten, A.N.-
dc.contributor.authorSalomon, C.-
dc.date.issued1999-
dc.identifier.citationPhysical Review Letters, 1999; 82(23):4619-4622-
dc.identifier.issn0031-9007-
dc.identifier.issn1079-7114-
dc.identifier.urihttp://hdl.handle.net/2440/101093-
dc.description.abstractWe describe the operation of a laser cooled cesium fountain clock in the quantum limited regime. An ultrastable cryogenic sapphire oscillator is used to measure the short-term frequency stability of the fountain as a function of the number of detected atoms Nat. For Nat varying from 4 × 104 to 6 × 105 the Allan standard deviation of the frequency fluctuations is in excellent agreement with the Nat-1/2 law of atomic projection noise. With 6 × 105 atoms, the relative frequency stability is 4 × 10-14τ-1/2where Τ is the integration time in seconds. This is the best short-term stability ever reported for primary frequency standards, a factor of 5 improvement over previous results. © 1999 The American Physical Society.-
dc.description.statementofresponsibilityG. Santarelli, Ph. Laurent, P. Lemonde, and A. Clairon, A. G. Mann, S. Chang, and A. N. Luiten, C. Salomon-
dc.language.isoen-
dc.publisherAmerican Physical Society-
dc.rights© 1999 The American Physical Society-
dc.source.urihttp://dx.doi.org/10.1103/physrevlett.82.4619-
dc.titleQuantum projection noise in an atomic fountain: a high stability cesium frequency standard-
dc.typeJournal article-
dc.identifier.doi10.1103/PhysRevLett.82.4619-
pubs.publication-statusPublished-
dc.identifier.orcidLuiten, A.N. [0000-0001-5284-7244]-
Appears in Collections:Aurora harvest 7
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