after, regal worked with dr. konrad lehnert at jila to establish a novel platform for studying the nanomechanics of a beam capacitively coupled a superconducting transmission-line microwave cavity, which achieved a displacement imprecision of 30 times the standard quantum limit . her postdoc in the group of prof. h. jeff kimble at caltech resulted in another novel experimental system for exploring cavity optomechanics, this time using optically levitated nanoparticles . regal returned to cu boulder as an assistant professor in physics in january 2010 and became the university's first clare booth luce professor .