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Q: Fachverband Quantenoptik und Photonik

Q 41: Precision Measurement and Metrology 1

Q 41.4: Talk

Wednesday, March 16, 2011, 17:15–17:30, HÜL 386

Precision measurement of the 1S-2S transition in atomic hydrogen — •Christian G. Parthey¹, Arthur Matveev¹, Janis Alnis¹, Axel Beyer¹, Nikolai Kolachevsky¹, Randolf Pohl¹, Thomas Udem¹, and Theodor W. Hänsch^1,2 — ¹Max-Planck-Institut für Quantenoptik, 85748 Garching — ²Ludwig-Maximilians-Universität, 80799 München

Precision spectroscopy of the 1S-2S transition in atomic hydrogen has been used to test quantum electro dynamics (QED), determine the Rydberg constant and the proton charge radius. It can also be used to set limits on possible Lorentz-boost invariance violations. Here we report on a new measurement of the 1S-2S transition pushing the uncertainty to the 10⁻¹⁵ level.