Mason Marshall (Fed)

Mason Marshall is a staff physicist in the Ion Storage Group. His work centers on precision measurement for improved metrology and tests of fundamental physics, with a focus on optical atomic clocks. He is currently working to develop and characterize the fifth-generation NIST aluminum-ion quantum logic clock, with the goal of improving its stability while maintaining its unparalleled accuracy. A more stable aluminum clock could be used as a reference or probe for spectroscopic tests of physics beyond the standard model, as well as advancing time metrology. Previously, he studied dark matter detection using solid-state quantum sensors in diamond as a postdoctoral fellow at the Harvard-Smithsonian Center for Astrophysics. He received his Ph.D. in physics from Harvard in 2019 for work on the precision comparison of the proton and antiproton magnetic moments.