A new type of atomic clock measures time with record precision

A new type of atomic clock, developed by MIT physicists, will allow scientists to measure more than just randomly.

vibrating atoms, but also particles of matter,which are entangled when they find themselves interconnected with each other despite the distance between them. This will allow scientists to more accurately measure atomic vibrations.

If modern atomic clocks wereadapted to measure entangled atoms, the measurement of time would be so accurate that for the entire time of the existence of the universe, the device would lag behind by less than 100 milliseconds.

"Optical atomic clock with improvedcharacteristics can achieve greater accuracy than today's optical watches, ”said lead author Edwin Pedroso-Peñafiel of the MIT Electronics Lab.

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The team argued that if the atomsentangled, their individual vibrations will be pulled around a common frequency with smaller deviations. The average of the oscillations that the atomic clock will measure will therefore be more accurate outside the standard quantum limit. The researchers tested their hypothesis by measuring the vibrations of ytterbium atoms, where the device distinguished shorter periods of time.

An atomic (or quantum clock) is used tomeasuring time, this device uses vibrations of atoms or molecules as a periodic process. They are used in satellite navigation, telecommunications, their data are also used by international and national bureaus of standards and precision time services.

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