Atomic clocks are already the most accurate timepieces ... lasers that simultaneously trap and measure about 10,000 super-cooled ytterbium atoms to make a so-called optical lattice clock (like the one built this year by researchers at …
Atomic clock experts ... with optical atomic clocks (either based on single trapped ions or on many neutral atoms). The PTB scientists are the first to have reached the finishing line using a single-ion clock. Their optical ytterbium clock
Ultrastable clock In the current study, Ludlow and his colleagues cooled 10,000 ytterbium atoms to 10 Microkelvin ... Testing basic physics If the new technology can be incorporated into an atomic clock, it could provide incredibly …
The ultimate accessory in exact timekeeping — the atomic clock — is set to become even more precise, after ultrashort laser pulses were successfully transmitted across open air to help synchronize the "ticking" of new optical atomic
While mechanical clocks use the movement of a pendulum to keep time, atomic clocks use an electromagnetic signal ... to obtain its best performance. But the new ytterbium clocks can achieve that same result in about one second of …
Meanwhile, since Huygens and Harrison, clocks have become much more accurate still. UTC is based on atomic clocks, which measure oscillations ... drilling through mountains between Chicago and New York to lay fibre-optic cables in a …
German scientists have built an even more accurate atomic clock, using atoms of ytterbium, that should not lose a second in several billion years, but that is an experimental device, not used for real-world applications. The Chinese …
The new strontium clock is among the best optical atomic clocks described to date in the published ... way at a number of standards labs across the globe, including the NIST ytterbium atoms work. The JILA work may enable quantum …
This is one reason Essen used the element to make the first of the next generation of clocks - the "atomic" clocks ... We now have new ways of measuring time. At NPL they are experimenting with the elements strontium and ytterbium