SAMOP 2023 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 47: Precision Measurements with Optical Clocks (joint session Q/QI)

Q 47.2: Vortrag

Donnerstag, 9. März 2023, 11:30–11:45, E001

A strontium optical clock based on Ramsey-Bordé spectroscopy — •Amir Mahdian1, Oliver Fartmann1, Ingmari C Tietje1, Martin Jutisz1, Conrad L Zimmermann2, Vladimir Schkolnik1,2, and Markus Krutzik1,21Humboldt-Universität zu Berlin, Institut für Physik — 2Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Berlin

We are developing an optical frequency reference based on Ramsey-Bordé interferometry using a thermal atomic beam. The 5s2 1S0 → 5s5p 3P1 intercombination line in strontium is chosen as our clock transition, which should allow for an Allan deviation as low as 2×10−15 between 100 s and 1000 s.

After an overview of the current state of our atom interferometer, the latest developments in our laser systems and frequency stabilization will be presented. Moreover, I outline two methods for reading the population of the associated quantum states in the clock transition, along with the progress on spectroscopy on the 5s5p 3P1 → 5p2 3P0 line at 483 nm.

This work is supported by the German Space Agency (DLR), with funds provided by the Federal Ministry for Economic Affairs and Climate Action (BMWK) under grant number DLR50WM1852, and by the German Federal Ministry of Education and Research within the program quantum technologies - from basic research to market under grant number 13N15725.

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