  We propose a novel platform for the investigation of quantum wave packet
dynamics, offering a complementary approach to existing theoretical models and
experimental systems. It relies on laser-cooled neutral atoms which orbit
around an optical nanofiber in an optical potential produced by a red-detuned
guided light field. We show that the atomic center-of-mass motion exhibits
genuine quantum effects like collapse and revival of the atomic wave packet. As
distinctive advantages, our approach features a tunable dispersion relation as
well as straightforward readout for the wave packet dynamics and can be
implemented using existing quantum optics techniques.
