The criterion for election is exceptional contributions to the physics enterprise; e.g., outstanding physics research, important applications of physics, leadership in or service to physics, or significant contributions to physics education. Fellowship is a distinct honor signifying recognition by one's professional peers.
For exceptional scientific creativity and leadership in designing and demonstrating a state-of-the-art trapped ion optical clock with the lowest reported clock systematic uncertainty of 0.94 x 10^{-18}, and for implementing novel clock comparisons.