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676. WE-Heraeus-Seminar
"Novel optical clocks in atoms and nuclei"

9 - 12 July 2018, Physikzentrum Bad Honnef


Dear colleagues, we would like to cordially welcome you to the 676th Wilhelm and Else Heraeus-Seminar "Novel optical clocks in atoms and nuclei" which will be held from July 9th, 2018 to July 12th, 2018 at Physikzentrum Bad Honnef near Bonn in Germany. This seminar is generously funded by the Wilhelm and Else Heraeus Foundation.

The goal of the seminar is to discuss conceptually novel approaches to optical frequency standards and clocks. Despite the remarkable precision already realized in current atomic clock worldwide, there is a wide range of concepts for next-generation devices, rooted in very different physical systems. The aim of the seminar is to provide a comprehensive overview on the current state of discussion and shape a community.

A special candidate for a future optical clock is the low-energy isomeric state in Thorium-229, opening the road towards nuclear clocks. The Wilhelm and Else Heraeus Seminar will resume the current state of knowledge on this exciting system and connect the worldwide community in this field. The seminar is jointly organized with the EU-FET-Open consortium of nuClock.

Also, we want to identify and discuss new applications of precision frequency and time standards, in particular regarding constraining possible variations of fundamental constants, clock-based geodesy, and gravitational wave detection.

The conference language will be English. Please note that the total number of participants is limited. The organizers invite all interested researchers to apply and to contribute to the poster session. A best-poster award will be presented. Female researchers are particularly encouraged, since the Wilhelm and Else Heraeus Foundation seeks to support women in science.


The seminar will take place at


Physikzentrum Bad Honnef

Hauptstr. 5

53604 Bad Honnef


The Physikzentrum is run by the Deutsche Physikalische Gesellschaft e.V. (German Physical Society) and supported by the University of Bonn and the state North Rhine-Westphalia.

The stately mansion housing the Physikzentrum is surrounded by a park at the foot of the Siebengebirge ("the Seven Hills") on the right bank of the Rhine River. In the immediate neighbourhood an extensive net of hiking-paths in Germany's oldest nature preserve invites pleasant short or long walks.

Physikzentrum Bad Honnef can be easily reached both by car and by public transport. To plan your journey, please, follow the link: Opens external link in new windowhttp://www.dpg-physik.de/

Invited speakers


Keynote talks:

·   Ekkehard Peik

·   Peter Thirolf

·   Marianna Safronova

·   Jose Ramon Crespo Lopez-Urrutia


Talks on the nuclear clock

·   Koji Yoshimura

·   Marcin Piotrowski

·   Petr Borisyuk

·   Thorsten Schumm

·   Christian Enss 

·   Christian Schneider 

·   Eric Hudson 

·   Adriana Palffy

·   Matthias Verlinde


Talks on novel approaches, applications, theory

·   Julian Berengut

·   Atsushi Yamaguchi

·   Nils Huntemann

·   Andrew Ludlow

·   Michal Zawada

·   Victor Flambaum

·   Tanja Mehlstäubler

·   Pacôme Delva

·   David Champion

·   Jean-Lautrier Gaud





The seminar will start on Sunday (July 8th, 2018) with an informal get-together and will end on Thursday (July 12th, 2018) in the early afternoon. We schedule 4 introductory keynote talks (45 min.) and 20 topical talks (25 + 5 min.), complemented with „Hot Topic” talks. A best-poster-award will be handed out on Thursday July 12th, an excursion and a conference dinner are planned for Tuesday (July 10th) afternoon/evening

  Prof. Dr. Simon Stellmer

  Physikalisches Institut der Universität Bonn 

  AG Quantenmetrologie

  Nussallee 12

  53115 Bonn

  Email: stellmer@uni-bonn.de

     Dr. Ekkehard Peik

     Physikalisch-Technische Bundesanstalt (PTB)

     Bundesallee 100

     38116 Braunschweig, Germany

     Email: ekkehard.peik(at)ptb.de

Note of Thanks

The seminar is generously funded by the Wilhelm and Else Heraeus-Foundation, a private German institution which supports scientific research and education with emphasis on physics.

The funding covers local expenses for accomodation and meals for all participants at the Physikzentrum in Bad Honnef. No conference fee will be charged.

more about: Wilhelm und Else Heraeus-Stiftung (German)