Early Career Conference in Trapped Ions (ECCTI) 2020

Session

Precision Measurements 1

P1

13 Jan 2020, 14:30

6/2-024 - BE Auditorium Meyrin (CERN)

93. Towards testing Fundamental Physics using Ramsey-Comb Spectroscopy on He$^+$+

Mr Elmer Grundeman (Vrije Universiteit Amsterdam)

13/01/2020, 14:30

Precision Measurements

Oral

Simple atomic systems are the ideal probe to test fundamental physics. For example, for hydrogen the 1S-2S transition frequency can nowadays be calculated with an impressive relative accuracy of 10$^{-12}$ [1], and measurements reach an even higher relative accuracy of 10$^{-15}$[2]. Combining different measurements in hydrogen has been used to determine fundamental constants such as the...

62. Photon-recoil assisted rovibrational spectroscopy of the $^{24}$MgH$^+$ ion

Emilie Clausen (Aarhus University)

13/01/2020, 15:00

Precision Measurements

Oral

Precision spectroscopy of molecules promises a wealth of interesting applications e.g. for better determination of natural constants, for tests of fundamental particle theories, and for qubit realizations. Unfortunately, most molecules do not possess closed transitions for laser cooling, crucial for obtaining temperatures low enough for exploiting this novel realm of physics.
A way to...

43. Towards precision spectroscopy of molecular hydrogen ions

Julian Schmidt (LKB)

13/01/2020, 15:30

Precision Measurements

Oral

The molecular hydrogen ion is a promising candidate for the metrology of fundamental constants, as its rovibrational transition frequencies can be calculated to the few-10$^{-12}$ accuracy level [1]. Measuring the transition frequencies between the levels with similar precision will provide an independent determination of the proton to electron mass ratio $m_p$/$m_e$ and possibly of the proton...