A New Kind of Atomic Clock Could Redefine the Second

Scientists are exploring a new type of optical atomic clock based on ytterbium-173 ions that could help define the future ...
EDN

System Clock Generators: A Comparison of a PLL Synthesizer vs. a Crystal Oscillator Clock

An electronic system requires a reliable, precision timing reference: the system clock. We examine and compare two forms of system clocks, the Crystal Oscillator and the Phase Locked Loop Synthesizer ...
Physics World

Ion-clock transition could benefit quantum computing and nuclear physics

Nuclear effect The deformed shape of the ytterbium-173 nucleus (right) makes it possible to excite the clock transition with a relatively low-power laser. The same transition is forbidden (left) if ...