These radical new devices keep time using fluctuations in the energy states of an atom’s nucleus, rather than those of its ...
World's first thorium-229 nuclear clock shows potential for ultra-precise timekeeping and fundamental physics tests.
Back in 2024, a joint collaboration of researchers from TU Wien in Austria and the National Institute of Standards and ...
A clock based on radioactive thorium atoms realises a long-held ambition, demonstrating a technology that could eventually ...
A string of experiments using thorium-229 nuclei has brought the long-theorized nuclear clock closer to reality, producing frequency measurements stable enough to challenge the atomic clocks that ...
In 2008, a team of UCLA-led scientists proposed a scheme to use a laser to excite the nucleus of thorium atoms to realize extremely accurate, portable clocks. Last year, they realized this ...
For decades, nuclear clocks have existed as one of physics’ most tempting promises. A ...
Time feels familiar. It marks every moment of daily life, from the ticking of a wall clock to the changing numbers on a ...
Since May 2024, we have accumulated a database of 73 line scans at temperatures ranging from 134 K to 294 K across the three crystals. In the following, we characterize the reproducibility of the ...
Last year, a UCLA-led team accomplished something scientists have been trying to do for 50 years. They made radioactive thorium nuclei absorb and emit photons like electrons in an atom do. This ...