Another published paper!

22 May 2024

Title: "Quantum control of classical motion: piston dynamics in a Rabi-coupled Bose–Einstein condensate"

Dr. Andreas Ruschhaupt from the Quantum Controls via Shortcuts to Adiabaticity research group's paper on "Quantum control of classical motion: piston dynamics in a Rabi-coupled Bose–Einstein condensate" has been published in New Journal of Physics 26, 053031 (2024). This work has been done in collaboration along with Jing Li from the same group and with E. Ya Sherman (University of the Basque Country UPV/EHU, Spain).

The paper emanated from research supported in part by a Grant from Science Foundation Ireland under Grant number 19/FFP/6951 (“Shortcut- Enhanced Quantum Thermodynamics”).

We develop a model and explore the dynamics of a hybrid classical-quantum system consisting of a classical piston and a self-interacting pseudospin 1/2 Bose–Einstein condensate with a time-dependent Rabi coupling. We investigate the mechanical work produced by the piston moving as a result of the quantum pressure of the condensate. The time-dependent Rabi field redistributes the condensate density between the spin components and, as a result, causes a time-dependent pressure acting on the piston. Correspondingly, the motion of the piston produces quantum evolution of the condensate mass- and spin density profiles. We show how by optimised design of the time-dependent direction of the Rabi field based on a quasi-stationary quantum pressure approximation, one can control both the position and velocity of the piston.