Atom interferometry promises great accuracy in measuring changes in atomic energy. We are focusing on two measurements in particular. First, by shining a Stark beam only on one packet of the interferometer, we can measure the fine constant through the change in the packet’s phase as compared to the non-illuminated one. Second, by bouncing the free-falling packets indepently of one another, we can measure the difference in the packets’ interactions to gravity when they are separated by a small distance. Our group are exploring both of the topics using both a linear waveguide and a cylindrically-symmetric waveguide with BEC atom interferometry.
Arpornthip, T., C.A. Sackett, and K.J. Hughes, 2012, “Vacuum pressure measurement using a magneto-optical trap,” Physical Review A 85, 033420.
Arpornthip, T., A.V. Balatsky, M.J. Graf, and Z. Nussinov, 2011, “Influence of elastic deformations on the supersolid transition,” Physical Review B 84, 174304.
Arpornthip, T., C.M. Bender, 2009, “Conduction bands in classical periodic potentials,” Pramana Journal of Physics 73, 259-267.