Frequency Ratio of 199Hg and 87Sr Optical Lattice Clocks beyond the SI Limit

UTokyo Research掲載「水銀・ストロンチウム光格子時計の高精度直接比較に成功」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/highly-precise-comparison-of-mercury-and-strontium-optical-lattice-clocks.html