Search Language Menu Research News Rapid comparison of optical lattice clocks Swift, ultra-precise measurements of frequency ratios may open new windows on physical world Graduate School of Engineering / Faculty of Engineering 2016/04/06 A look into RIKEN’s lattice clock laboratory Various laser systems provide the light required to trap and cool ytterbium and strontium atoms, which is delivered to the clocks visible in the background by optical fibers. Computer systems time the application of laser pulses and control the clock laser frequencies. © 2016 Hidetoshi Katori. A University of Tokyo and RIKEN research group has demonstrated the high precision comparison of two optical lattice clocks working with the elements ytterbium (Yb) and strontium (Sr) that sets a new record in accuracy and
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