Using radio telescopes observing distant stars, scientists have connected optical atomic clocks on different continents. The results were published in the scientific journal Nature Physics by an international collaboration ...
Astronomy
Oct 8, 2020
1
221
A team of researchers from Germany and Austria has taken a new measurement of the nucleus of a thorium-229 isotope, moving one step closer to a nuclear clock. In their paper published in the journal Physical Review Letters, ...
There are eight classical planets in our solar system, from speedy Mercury to distant Neptune. There are also numerous dwarf planets, such as Pluto and Ceres. While we continue to find more dwarf planets, there are some hints ...
Astronomy
May 25, 2020
14
303
Researchers at the National Institute of Standards and Technology (NIST) have used state-of-the-art atomic clocks, advanced light detectors, and a measurement tool called a frequency comb to boost the stability of microwave ...
Optics & Photonics
May 21, 2020
3
1504
Chinese researchers have developed a pulsed optically pumped (POP) atomic clock with a frequency stability of 4.7 x 10-15 at 104 seconds based on a new design.
General Physics
Apr 21, 2020
0
12
An academic-industrial team in Japan has connected three laboratories in a 100-kilometer region with an optical telecommunications fiber network stable enough to remotely interrogate optical atomic clocks. This type of fiber ...
Optics & Photonics
Mar 17, 2020
0
150
The field of photonic integration—the area of photonics in which waveguides and devices are fabricated as an integrated system onto a flat wafer—is relatively young compared to electronics. Photonic integration has focused ...
Optics & Photonics
Feb 12, 2020
0
62
Atomic clocks are used around the world to precisely tell time. Each "tick" of the clock depends on atomic vibrations and their effects on surrounding electromagnetic fields. Standard atomic clocks in use today, based on ...
Quantum Physics
Dec 23, 2019
8
87
JILA physicists and collaborators have demonstrated the first next-generation "time scale"—a system that incorporates data from multiple atomic clocks to produce a single highly accurate timekeeping signal for distribution. ...
Quantum Physics
Oct 21, 2019
0
36
One of the fundamental challenges of physics is the reconciliation of Einstein's theory of relativity and quantum mechanics. The necessity to critically question these two pillars of modern physics arises, for example, from ...
Quantum Physics
Oct 7, 2019
0
646
