For his pioneering work on Chip-Scale Atomic Devices.
For intellectual leadership, selection and measurement of resonator structures for implementation in high performance frequency sources, essential to the determination of atomic resonance
For most significant contributions to high precision frequency control and measurements, in particular to optical frequency chains, the invention of the phase-coherent optical frequency interval division technique and early groundwork and demonstration of optical frequency combs and their use for frequency synthesis.
For outstanding contributions to the field of precise time keeping and time transfer, including pioneering research and development of GNSS time transfer, network time services, and the design of better time scales.
For outstanding experimental and theoretical contributions to the understanding of optical pumping using spectral lamps and lasers for improvement in Rubidium frequency standards used in terrestrial and space-based navigation and timekeeping systems.
For outstanding contributions to the field of atomic frequency standards, including pioneering research and development of optical frequency standards and their measurement.
For decisive contributions to the development of optical clocks, of fs-laser spectroscopy, and to the refinement of frequency measurement into the 19th digit of precision.
For seminal work on the time variation of fundamental constants and outstanding contributions to trapped ion clocks
For outstanding contributions to the invention and development of an optical lattice clock
Patrick Gill: "For profound and continuing contributions to time and frequency metrology and the outstanding realization of single ion optical frequency standards"
Leo Hollberg: "For seminal contribution to optical frequency metrology with the development of ultra stable optical frequency standards and related femtosecond clockwork"
For seminal contributions to laser spectroscopy and the realization of accurate optical frequency standards
For outstanding contributions to experimental quantum optics, precision spectroscopy, and optical frequency combs