
The institute “Fundamental physics for metrology” has been recently established at the PTB in order to advance the quantum theory of atomic and mesoscopic systems. The institute’s activities range from the high-precision analysis of atomic structure and collisions, to the description of coherent processes in ultra-cold quantum gases and phase transitions in magnetic systems. These research activities aim to support the development of new metrology standards, the precise determination of fundamental physical constants, and tests of fundamental symmetries of Nature.
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Jonas Sommerfeldt is awarded with SPARC PhD-Prize
Discrepancy for the elastic scattering of light resolved
A long-standing discrepancy between theoretical predictions and experimental measurements of the elastic scattering of light by heavy atoms has been resolved by new, non-perturbative calculations of Delbrück scattering.
For further informations: Phys. Rev. Lett. 131, 061601
Physics 16, s114
(August 2023)
Workshop "Structured Light and its Applications" - 01.06.2023
TU Braunschweig is organizing a half-a-day workshop on the topic of "Structured Light and its Applications" on June 1st 2023. Everyone, from student to senior colleague, is warmly welcome. More information and a registration form can be found here.
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Roman Borris Bachelor Defense
Extreme Atomic Systems Conference in Riezlern

Members of our group visited the conference "Extreme Atomic Systems" in Riezlern to give talks and meet colleagues from atomic physics community. During breaks, sunny weather invited hiking trips through the stunning landscape.
(February 2023)
Mathis Haase defends his thesis
Mathis Haase successfully defended his bachelor's thesis. He delivered a thesis titeled "Polarization Gradient Cooling of Neutral Atoms with Twisted Light". Congratulations and all the best!
(February 2023)
Robert Waltner defends his thesis
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Sebastian Ulbricht is awarded with Walter-Kertz Studienpreis
Sebastian Ulbricht (4th from the left) received the Walter-Kertz Studienpreis for his excellent PhD thesis titled "Theoretical Investigation of Gravitational Acceleration Effects in Earth-based High Precision Experiments". Furthermore, Jan Richter (middle) and Riaan Schmidt (1st from the right) celebrated the achievement of their master's degrees. Congratulations!
(November 2022)
Field Trip to Heidepark Soltau
Attendance at the 20th international HCI conference
Our PhD students Sophia Strnat (1st row, 5th from the left) and Jonas Sommerfeldt (3rd row, 1st from the left) attended the 20th international conference on the physics of highly charged ions (HCI) in Matsue, Japan, (http://yebisu.ils.uec.ac.jp/hci2022/) and presented their results about Rayleigh and Delbrück scattering.
(August/September 2022)
Trip to the Heidepark
Anna Viatkina receives her PhD
Jonas Sommerfeldt publishes novel, promising study about Delbrück scattering
For the very first time calculations of Delbrück scattering to all orders in αZ, including the Coulomb corrections, have been performed.
For more information: Phys. Rev. A 105, 022804
(February 2022)
Sebastian Ulbricht receives his PhD
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Yuxiong Duan receives his PhD
Marc R. Momme receives his PhD
Anton A. Peshkov is Reviewer of the Year 2020 of the Journal of Physics B and Outstanding Reviewer of the Journal of Physics Photonics
We congratulate on this extraordinary awards and are looking forward to prospective publications!
For more information: Journal of Physics B und
Journal of Physics Photonics
(April 2021)