The time dimension is performed using a laser.
Physicists from the National Institute of standards and technology (USA) broke the record of stability of atomic clocks. A study published in the journal Nature Photonics.
“We have eliminated a critical type of noise during work hours, effectively making the clock signal stronger,” said study co-author Andrew Ludlow. According to him, a new watch, it is possible to achieve a clock instability of the 1.5 parts in a trillion (1 followed by 18 zeros) for a few thousand seconds.
The basis of the device created by scientists, are two ensembles of five or ten thousand atoms of ytterbium recorded in an optical trap. The time dimension is performed using a laser that tracks the transition between the different energy States of a quantum system.
New achievement slightly exceeds the previous record, also set up by American scientists from the National Institute of standards and technology.
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