HYBRID: Time Crystals: Harnessing the Power of Time

A lecture in the "Physics & Pizza" series (held in English)

Mo, 11.12.2023 18:15  –   Mo, 11.12.2023 19:15
Dr. Alex Greilich, TU Dortmund University
Magnus-Haus Berlin
Am Kupfergraben 7, 10117 Berlin, Germany

also to be followed ONLINE
Registration required
Contact person:
Andreas Böttcher, , 030/201748-0
External Link:
request for access to online streaming


This lecture will be held in presence at Magnus-Haus and can be followed online at the same time. Use the links above to register your attendance in person on site or to receive access data for online attendance. No admission after the start of the event. Please do not participate if you have symptoms of a respiratory infection (cold symptoms).

Topic: Time crystals are a new and intriguing phase of matter that challenges our understanding of the laws of physics. They are systems of particles that are in perpetual periodic motion, in ideal case, without any external driving force. Time crystals still need to be fully understood, but they can revolutionize our understanding of physics and lead to new technological applications. For example, they could be used to develop new types of sensors and clocks. I will discuss an experimental realization of a time-crystal based on a semi-classical system using a semiconductor structure. This system can be a testbed for investigating non-linear dynamics due to its enormous flexibility and stability.

CV: Dr. Alex Greilich has completed his PhD at TU Dortmund, studying spin coherence in low-dimensional nanostructures. He then did his PostDoc at the Naval Research Laboratory in the group of Daniel Gammon, where he played a key role in developing the structure with the optical control of the two-qubit quantum gate based on coupled semiconductor quantum dots. Since 2011, Dr. Greilich has been back to TU Dortmund, where he has done the Habilitation and has extended his research interests by studying spin-noise spectroscopy and developing a semiconductor realization of a time-crystal.

Following the lecture, there will be a get-together where participants can exchange ideas with each other over pizza and drinks in the Remise and the garden of the Magnus-Haus.

The event is sponsored by the Wilhelm and Else Heraeus Foundation.