Precision Measurement of the Hydrogen 1 S − 2 S Frequency via a 920-km Fiber Link

Arthur Matveev (1) , Christian Parthey (1) , Katharina Predehl (1) , Janis Alnis (1) , Axel Beyer (1) , Ronald Holzwarth (1) , Thomas Udem (1) , Tobias Wilken (1) , Nikolai Kolachevsky (1) , Michel Abgrall (2) , Daniele Rovera (2) , Christophe Salomon (3) , Philippe Laurent (4, 2) , Gesine Grosche (5) , Osama Terra (5) , Thomas Legero (5) , Harald Schnatz (5) , Stefan Weyers (5) , Brett Altschul (6) , Theodor W. Hänsch (1)

1 MPQ - Max-Planck-Institut für Quantenoptik
2 LNE - SYRTE - Laboratoire national de métrologie et d'essais - Systèmes de Référence Temps-Espace
3 LKB (Lhomond) - Laboratoire Kastler Brossel
4 IBMM - Institut des Biomolécules Max Mousseron [Pôle Chimie Balard]
5 PTB - Physikalisch-Technische Bundesanstalt [Braunschweig]
6 Department of Physics and Astronomy [Columbia]

We have measured the frequency of the extremely narrow 1S-2S two-photon transition in atomic hydrogen using a remote cesium fountain clock with the help of a 920 km stabilized optical fiber. With animproved detection method we obtain f1S-2S¼2466 061 413 187 018ð11ÞHz with a relative uncertainty of 4:51015, confirming our previous measurement obtained with a local cesium clock [C. G. Partheyet al., Phys. Rev. Lett.107, 203001 (2011)]. Combining these results with older measurements, we constrain the linear combinations of Lorentz boost symmetry violation parameters cðTXÞ¼ð3:11:9Þ1011 and 0:92cðTYÞþ0:40cðTZÞ¼ð2:65:3Þ1011 in the standard model extension framework [D. Colladay, V. A. Kostelecky ́, Phys. Rev. D.58, 116002 (1998)]

Domaines: Physique [physics]; Astrophysique [astro-ph]

Arthur Matveev, Christian Parthey, Katharina Predehl, Janis Alnis, Axel Beyer, et al.. Precision Measurement of the Hydrogen 1 S − 2 S Frequency via a 920-km Fiber Link. Physical Review Letters, 2013, 110 (23), ⟨10.1103/PhysRevLett.110.230801⟩. ⟨hal-02526061⟩