Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 14: Precision Measurements and Metrology (Optical Clocks)

Q 14.1: Gruppenbericht

Montag, 11. März 2019, 14:00–14:30, S SR 111 Maschb.

Opticlock: Towards a transportable and user-friendly optical single-ion clock — •Ronald Holzwarth¹, Moustafa Abdel Hafiz², Bassem Arar³, Maximilian Biethahn⁴, Stefan Brakhane⁵, Malte Brinkmann², Alexandre Didier², Peter Federsel⁶, József Fortágh⁶, Matthäus Halder¹, Nils Huntemann², Michael Johanning⁷, Robert Jördens⁸, Wilhelm Kaenders⁵, Florian Karlewski⁶, Florian Kienle⁵, Maurice Lessing¹, Tanja Mehlstäubler², Dieter Meschede⁹, Ekkehard Peik², Piet Schmidt², Hendrik Siebeneich⁷, Jürgen Stuhler⁵, Christian Tamm², Enrico Vogt¹⁰, Andreas Wicht³, and Christof Wunderlich⁷ — ¹Menlo Systems GmbH — ²PTB — ³FBI, Berlin — ⁴VACOM GmbH — ⁵TOPTICA AG — ⁶HighFinesse GmbH — ⁷Uni Siegen, Department Physik, — ⁸QUARTIQ GmbH — ⁹Uni Bonn, Angewandte Physik — ¹⁰Qubig GmbH

Today’s most accurate and stable clocks are based on optical reference transitions of single ions or neutral atoms. Prototypes reach accuracies of a few parts in 10⁻¹⁸ which corresponds to a deviation of about one second over the age of the universe. Their unprecedented precision opens up numerous commercial applications, e.g. synchronization of large data networks, telecommunication systems and radio telescopes, as well as geodetic height measurements and global satellite navigation systems. Up to now, however, such optical clocks have to be operated by scientists in highly specialized laboratories under well-defined conditions.

The opticlock consortium (www.opticlock.de) is developing a robust and easy-to-use optical clock integrated into two mobile 19" rack assemblies, reliably operational in a standard industrial environment. For this purpose, industrial partners with engineering expertise and academic partners develop in close collaboration central components of the clock such as the cooling and clock lasers, the ion trap, the vacuum apparatus and the control of the clock. The clock will be based on the ²S_1/2 → ²D_3/2 transition of a single ¹⁷¹Yb⁺ ion at 436 nm wavelength, as ¹⁷¹Yb⁺ can be trapped for weeks and laser diodes for cooling and interrogation are commercially available.

We will give an overview of the opticlock system design and present the current development status of its subsystems and components.