For the first time, researchers have demonstrated that a stable frequency reference can be reliably transmitted more than 300 km over a standard fiber-optic telecommunications network and used to synchronize two radio telescopes. Stable frequency references used to calibrate clocks and instruments that make ultraprecise measurements are usually only accessible at facilities that generate them using expensive atomic clocks. The new technology could allow scientists anywhere to access the frequency standard simply by tapping into the telecommunications network.


Find more on how to link multiple telescopes without multiple atomic clocks at

Author: AOLab
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