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OSA Quantum 2.0 Conference

Opticlock: Transportable and Easy-to-Operate Optical Single-Ion Clock

Stephan Ritter, Moustafa Abdel Hafiz, Bassem Arar, Ahmad Bawamia, Klaus Bergner, Maximilian Biethahn, Stefan Brakhane, Alexandre Didier, József Fortágh, Matthäus Halder, Ronald Holzwarth, Nils Huntemann, M. Johanning, Robert Jördens, Wilhelm G. Kaenders, Florian Karlewski, Florian Kienle, Markus Krutzik, Maurice Lessing, T. E. Mehlstäubler, Dieter Meschede, E. Peik, Achim Peters, Piet O. Schmidt, Hendrik Siebeneich, J. Stühler, Chr. Tamm, Enrico Vogt, Andreas Wicht, Christof Wunderlich

Published Jan 1, 2020• 2 citations
Publisher

Abstract

A robust optical clock was developed, integrated into two mobile 19” rack assemblies and based on the 2S1/2-2D3/2 transition of a single 171Yb+ ion. The system design and a first complete evaluation will be discussed.
DOI
10.1364/quantum.2020.qth5b.6

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Conference on Lasers and Electro-Optics•Jan 1, 2022•0 citations
We report on a transportable and easy-to-operate optical clock utilizing the 2S1/2 - 2D3/2 transition of a single trapped 171Yb+ ion at 436 nm. Developed within a pilot project for quantum technology in Germany lead by industry, the clock is set up in two 19″ racks. In this way, transportation can easily be realized, and the large degree of automatization allows for operation outside highly specialized laboratories for applications beyond basic research. Comparisons to existing high-accuracy optical clock systems enable a verification of the clock's stability and uncertainty budget at the low 10−17 level. During these tests, operation with 99.8% availability over more than 14 days has been achieved.
We present the setup of our optical frequency standard (OFS) “TOPTICLOCK”. It is based on the 2S1/2 (F=0) – 2D3/2 (F=2) electric quadrupole transition at 435.5 nm of a single laser-cooled and trapped 171Yb+ ion. All required subsystems are contained in two transportable 19” rack compartments. By comparing it with a laboratory-style OFS of the German National Metrology Institute (PTB), which operates on the 467 nm electric octupole transition, using a TOPTICA DFC optical frequency comb, a frequency instability of 5×10-15/√τ with systematic uncertainty below 2×10-17 was demonstrated. The performance of TOPTICLOCK was also benchmarked by directly comparing it to another OFS operating also at the 435.5 nm clock transition. An agreement between both systems with a total uncertainty well below 10-17 was obtained.