Optical ion clock 1,000 more accurate than clocks that set international time
The ion trap of the new In+/Yb+-crystal clock in its vacuum chamber. The Ions are trapped in the gap that can be seen in the middle of the picture between the gold electrodes (target). Zoomed in picture: a crystal from indium- (pink) and ytterbium (blue) ions. Image: Physikalisch-Technische Bundesanstalt
Germany's national metrology institute has demonstrated a new type of atomic clock that uses multiple ions – often of different kinds – and traps them simultaneously
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