image: A chip-scale precision optical frequency synthesizer. This material relates to a paper that appeared in the April 22, 2016, issue of Science Advances, published by AAAS. The paper, by S.-W. Huang at the University of California Los Angeles in Los Angeles, Calif., and colleagues was titled, "A broadband chip-scale optical frequency synthesizer at 2.7×10-16 relative uncertainty" view more
Credit: Nicoletta Barolini