Faculté des sciences

Optical Clocks in Space

Schiller, S. ; Görlitz, A. ; Nevsky, A. ; Koelemeij, J.C.J. ; Wicht, A. ; Gill, P. ; Klein, H.A. ; Margolis, H.S. ; Mileti, Gaetano ; Sterr, U. ; Riehle, F. ; Peik, E. ; Tamm, Chr. ; Ertmer, W. ; Rasel, E. ; Klein, V. ; Salomon, C. ; Tino, G.M. ; Lemonde, P. ; Holzwarth, P. ; Hänsch, T.W.

In: Nuclear Physics B - Proceedings Supplements, 2007, vol. 166, p. 300-302

The performance of optical clocks has strongly progressed in recent years, and accuracies and instabilities of 1 part in 1018 are expected in the near future. The operation of optical clocks in space provides new scientific and technological opportunities. In particular, an earth-orbiting satellite containing an ensemble of optical clocks would allow a precision measurement of the... Plus

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    Summary
    The performance of optical clocks has strongly progressed in recent years, and accuracies and instabilities of 1 part in 1018 are expected in the near future. The operation of optical clocks in space provides new scientific and technological opportunities. In particular, an earth-orbiting satellite containing an ensemble of optical clocks would allow a precision measurement of the gravitational redshift, navigation with improved precision, mapping of the earth's gravitational potential by relativistic geodesy, and comparisons between ground clocks.