News from our research group

Tobias Burgermeister receives Ph. D. We congratulate him on this achievement!

The title of his thesis is

Development and characterization of a linear ion trap for an improved optical clock performance.

You can find his thesis here.

Lars Timm graduates as a Master of Science. We congratulate him on his degree!

The topic of his thesis is:

Interplay between phase transitions and excitation dynamics in Coulomb crystals

Kai Dietze graduates as a Master of Science. We congratulate him on his degree!

The topic of his thesis is:

Zustandskontrolle und Dynamical Decoupling mit Pulssequenzen für gefangene Ionen

Tanja Mehlstäubler gave an invited talk during the opening session of CLEO 2019. She spoke on ‘Ultrastable optical atomic clocks for geodesy’. As part of the presentation, Tanja spoke also about work planned within the scope of the new ROCIT project.

Hartmut Nimrod Hausser graduates as a Master of Science. We congratulate him on his degree!

The topic of his thesis is:

Bereitstellung von UV-Laserlicht zur direkten Kühlung und Detektion von ¹¹⁵In⁺

You can find his thesis here.

Chih-Han Yeh graduates as a Master of Science. We congratulate him on his degree!

The topic of his thesis was:

Excitation of the Forbidden Octupole Transition in ¹⁷²Yb⁺ Coulomb Crystals

You can find his thesis here.

We developed an ultra-stable laser system at 946 nm for the interrogation of our multi-ion clock based on Indium ions. The demonstrated instability of 1.1x10-16 at 1 s ranks among the best instabilities achieved worldwide with ultra-stable lasers at room temperature. In addition, all key components...

We will hold an upcoming DQ-mat workshop on 'Dynamics of ion coulomb crystals' at PTB on the 20th and 21st of February 2019. Invited speakers are M. Plenio, F. Schmidt-Kaler, M. Drewsen, I. Counts, K. Singer, C. Wunderlich, G. Morigi, R. Nigmatullin and T. Schätz. The workshop is organized by Tanja...

Dr. Henning Fürst joins the QuaCCS team as a PostDoc. Henning has done his masters thesis with Prof. Dr. Schmidt-Kaler and his PhD thesis with Dr. René Gerritsma on a Hybrid quantum system of ultracold neutral Lithium atoms and a single Ytterbium ion. Welcome Henning!

On Tuesday February 12th at 10:00 am Adam Selyem from the University of Glasgow will give a talk at the Raumzellen Bau at PTB Braunschweig (RZB11).  The title of his talk is: 'Atom optics with structured light'.

Abstract: In recent years we have obtained exquisite spatial control over all degrees...