Atomtronic Many-Body Transport using Husimi Driving
Quantum systems with exact analytic solutions are rare - challenging the realisation of excitation-free transport methods for many-body systems. Husimi's 1953 treatment of linearly driven harmonic oscillators constitutes an important exception, describing a wavepacket which is spatially translated but otherwise unperturbed by the driving. In this work, we experimentally demonstrate the application of Husimi's solution to an interacting many-body system, namely optically- and magnetically-trapped Bose-Einstein condensates subject to resonant and off-resonant linear magnetic driving potentials. The observed centre-of-mass motion is consistent with theory and shows minimal excitation of the displaced condensate - a highly desirable property of any condensate manipulation technique. We demonstrate transport 72 times faster than adiabatic rates, and a novel Husimi driving-based trap frequency measurement. We finally propose future applications based on our experimental results: an atom interferometry scheme, and methods for extended transport and precision control of one-body, few-body, and many-body systems via Husimi driving.