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2022 Gold Medal Award
AWARD CITATION
Dr. Ye is recognized for exceptional advances in metrology that enabled measurement of the difference between the frequency of two optical atomic clocks at the 10^ -21 level. With this advance in clock operation, he resolved the gravitational redshift below the scale of a millimeter, an improvement of more than two orders of magnitude over the previous state of the art. His work represents a new standard of clock precision for probing the fundamental properties of space and time and demonstrates the practical importance of clock technology for quantum sensing and broader societal benefits.