Can dark matter interact with photons and influence atomic structure? A case for optical atomic clocks: Two different types of such clocks were compared at the Physikalisch-Technische Bundesanstalt (PTB) within the scope ...
General Physics
Jun 23, 2023
12
97
The nucleus of thorium-229 possesses a property that is unique among all known nuclides: It should be possible to excite it with ultraviolet light. To date, little has been known about the low-energy state of the Th-229 nucleus ...
General Physics
Apr 18, 2018
0
193
Quantum logic spectroscopy – which is closely linked with the name of the 2012 Nobel prize laureate, David J. Wineland – has been significantly extended: this new method is called "photon-recoil spectroscopy" (PRS). The ...
General Physics
Jan 30, 2014
0
0
Laser beams can do more than just heat things up; they can cool them down too. That is nothing new for physicists who have devoted themselves to precision spectroscopy and the development of optical atomic clocks. But what ...
Quantum Physics
Dec 13, 2021
0
439
(Physikalisch-Technische Bundesanstalt (PTB)) Researchers from the Max Planck Institute for the Science of Light in Erlangen/Germany and of the QUEST Institute, based at the Physikalisch-Technische Bundesanstalt, have tested ...
Optics & Photonics
Jul 2, 2014
0
1
A team of researchers from the Max Planck Institute for Nuclear Physics in Heidelberg, the Physikalisch-Technische Bundesanstalt in Braunschweig and the University of Aarhus in Denmark demonstrated for the first time Coulomb ...
General Physics
Mar 12, 2015
0
33
Quantum electronics promises significant advances in ultra-sensitive measurements and quantum information processing. In nanoelectronic circuits, one electron can be used to precisely modify the trajectory of another electron ...
Nanophysics
Jun 30, 2023
1
58
No one had ever come so close to the ideal laser before: theoretically, laser light has only one single color (also frequency or wavelength). In reality, however, there is always a certain linewidth. With a linewidth of only ...
Optics & Photonics
Jun 29, 2017
2
13
In the past few years, optical atomic clocks have made spectacular progress, becoming 100 times more precise than the best caesium clocks. So far, their precision has been available only locally, since frequency transfer ...
General Physics
Aug 9, 2016
2
42
How far above sea level is a place located? And where exactly is "sea level"? It is one objective of the geodesists to answer these questions with 1 cm accuracy. Conventional measurement procedures or GPS technologies via ...
General Physics
Oct 2, 2013
0
0
