Cold atoms in space and atomic clocks: ACES

Salomon, C.; Dimarcq, N.; Abgrall, M.; Clairon, A.; Laurent, Ph.; Lemonde, P.; Santarelli, Giorgio; Uhrich, Pierre; Bernier, Laurent-Guy; Busca, G.; Jornod, A.; Thomann, P.; Samain, E.; Wolf, Peter; González, F.; Guillemot, Ph.; Léon, S.; Nouel, F.; Sirmain, C.; Feltham, S.

doi:10.1016/s1296-2147(01)01274-4

Cited by 45 publications

(36 citation statements)

References 26 publications

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“…These results can also be interpreted in terms of a potential "variation of fundamental constants" (Flambaum 2006), thus opening a window on the "new physics" expected to lie "beyond the standard model". In this domain also, large improvements of the accuracy can be expected in the future with the space project ACES (Salomon 2001) and, on a longer term, with projects using optical clocks (Wolf 2009, Schiller 2009). …”

Section: Tests Of General Relativitymentioning

confidence: 99%

“…These projects are based on new technologies of importance for future fundamental physics and deep space exploration. In the following, we will focus our attention on atomic clocks, as used in the projects ACES (Salomon 2001) and SAGAS (Wolf 2009). We will also discuss their applications, not only for tests in fundamental physics, but also for other important purposes such as earth sciences, solar system physics or navigation.…”

Section: Tests Of General Relativitymentioning

confidence: 99%

“…ACES is an ESA mission in fundamental physics (Salomon 2001, Salomon 2007. ACES aims at flying a new generation of atomic clocks onboard the International Space Station (ISS) and comparing them to a network of ultra-stable clocks on the ground.…”

Section: Atomic Clock Ensemble In Space (Aces)mentioning

confidence: 99%

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Testing General Relativity with Atomic Clocks

Reynaud¹,

Salomon²,

Wolf³

2009

Space Sci Rev

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Abstract. We discuss perspectives for new tests of general relativity which are based on recent technological developments as well as new ideas. We focus our attention on tests performed with atomic clocks and do not repeat arguments present in the other contributions to the present book (This Issue 2009). In particular, we present the scientific motivations of the space projects ACES (Salomon 2001) and SAGAS (Wolf 2009).

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Section: Tests Of General Relativitymentioning

confidence: 99%

Section: Tests Of General Relativitymentioning

confidence: 99%

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Testing General Relativity with Atomic Clocks

Reynaud¹,

Salomon²,

Wolf³

2009

Space Sci Rev

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“…In a cold atom clock operating in microgravity, the interaction duration could be increased to ten seconds and the clock frequency performance could reach the level of 10 -16 . The ACES project [1], supported by ESA, proposes to install such a cold atom clock (PHARAO developed by CNES) on board the International Space Station. USA has two similar projects : PARCS and RACE.…”

Section: Introductionmentioning

confidence: 99%

New optical technology for cold atom experiments

Holleville

Dimarcq

Rigaud³

et al. 2017

International Conference on Space Optics — ICSO 2004

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“…Atomic physics has brought us some of the most precise measurements of fundamental constants [1,2], stringent constraints on their variations in time [3], clocks of the highest accuracy [4], quantum sensors [5,6], probes of general relativity [7] and physics beyond the standard model of particles and fields [8]. This formidable discipline has historically gone hand in hand with the study of molecules, which contributed to the development of laser physics and high-resolution laser spectroscopy, showing for instance the first observation of the photon recoil splitting [9].…”

Section: Introductionmentioning

confidence: 99%

Accurate determination of the Boltzmann constant by Doppler spectroscopy: Towards a new definition of the kelvin

Darquié

Mejri

Sow

et al. 2013

EPJ Web of Conferences

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Abstract. Accurate molecular spectroscopy in the mid-infrared region allows precision measurements of fundamental constants. For instance, measuring the linewidth of an isolated Doppler-broadened absorption line of ammonia around 10 m enables a determination of the Boltzmann constant k B . We report on our latest measurements. By fitting this lineshape to several models which include Dicke narrowing or speeddependent collisional effects, we find that a determination of k B with an uncertainty of a few ppm is reachable. This is comparable to the best current uncertainty obtained using acoustic methods and would make a significant contribution to any new value of k B determined by the CODATA. Furthermore, having multiple independent measurements at these accuracies opens the possibility of defining the kelvin by fixing k B , an exciting prospect considering the upcoming redefinition of the International System of Units.

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Cold atoms in space and atomic clocks: ACES

Cited by 45 publications

References 26 publications

Testing General Relativity with Atomic Clocks

Testing General Relativity with Atomic Clocks

New optical technology for cold atom experiments

Accurate determination of the Boltzmann constant by Doppler spectroscopy: Towards a new definition of the kelvin

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