Author

L. Timmen

results may include different authors with the same name

4 papers

Long-distance chronometric leveling with a portable optical clock

We have measured the geopotential difference between two locations separated by $457~\mathrm{km}$ by comparison of two optical lattice clocks via an interferometric fiber link, utilizing the gravitational redshift of the clock transition…

Atomic Physics · Physics 2024-12-02 J. Grotti , I. Nosske , S. B. Koller , S. Herbers , H. Denker , L. Timmen , G. Vishnyakova , G. Grosche , T. Waterholter , A. Kuhl , S. Koke , E. Benkler , M. Giunta , L. Maisenbacher , A. Matveev , S. Dörscher , R. Schwarz , A. Al-Masoudi , T. W. Hänsch , Th. Udem , R. Holzwarth , C. Lisdat

Calibration of a superconducting gravimeter with an absolute atom gravimeter

We present a 27-days long common view measurement of an absolute cold atom gravimeter (CAG) and a relative iGrav superconducting gravimeter, which we use to calibrate the iGrav scale factor. This allowed us to push the CAG long-term…

Instrumentation and Detectors · Physics 2021-05-19 S. Merlet , P. Gillot , B. Cheng , R. Karcher , A. Imanaliev , L. Timmen , F. Pereira Dos Santos

Direct comparisons of European primary and secondary frequency standards via satellite techniques

We carried out a 26-day comparison of five simultaneously operated optical clocks and six atomic fountain clocks located at INRIM, LNE-SYRTE, NPL and PTB by using two satellite-based frequency comparison techniques: broadband Two-Way…

Instrumentation and Detectors · Physics 2020-08-26 F. Riedel , A. Al-Masoudi , E. Benkler , S. Dörscher , V. Gerginov , C. Grebing , S. Häfner , N. Huntemann , B. Lipphardt , C. Lisdat , E. Peik , D. Piester , C. Sanner , C. Tamm , S. Weyers , H. Denker , L. Timmen , C. Voigt , D. Calonico , G. Cerretto , G. A. Costanzo , F. Levi , I. Sesia , J. Achkar , J. Guèna , M. Abgrall , D. Rovera , B. Chupin , C. Shi , S. Bilicki , E. Bookjans , J. Lodewyck , R. Le Targat , P. Delva , S. Bize , F. N. Baynes , C. F. A. Baynham , W. Bowden , P. Gill , R. M. Godun , I. R. Hill , R. Hobson , J. M. Jones , S. A. King , P. B. R. Nisbet-Jones , A. Rolland , S. L. Shemar , P. B. Whibberley , H. S. Margolis

Comparison between two mobile absolute gravimeters: optical versus atomic interferometers

We report a comparison between two absolute gravimeters: the LNE-SYRTE cold atoms gravimeter and FG5#220 of Leibniz Universit\"at of Hannover. They rely on different principles of operation: atomic and optical interferometry. Both are…

Atomic Physics · Physics 2010-06-29 S. Merlet , Q. Bodart , N. Malossi , A. Landragin , F. Pereira Dos Santos , O. Gitlein , L. Timmen