Build the World’s Smallest Atomic Clock

Build the World’s Smallest Atomic Clock

Illustration: Emily Cooper

Build the World’s Smallest Atomic Clock, Trap a Nitrogen Atom in a Carbon Cage. By Kyriakos Porfyrakis and Edward A. Laird @

An atomic clock begins with an oscillator [see diagram], which creates a frequency close to the energy level of the atom being used. If the oscillator deviates from the reference frequency, the atom’s absorption pattern changes, the change is detected by a laser, and the laser’s signal is used as feedback to tune the oscillator. For the very best performance, the atoms must be electromagnetically isolated, which requires equipment that can take up entire rooms.

Build the World’s Smallest Atomic Clock – [Link]

Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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