Fast expansions and compressions of trapped-ion chains
M. Palmero, S. Martínez-Garaot, Joseba Alonso, Jonathan Home, Juan Gonzalo Muga · Physical Review A · 2015
We investigate the dynamics under diabatic expansions or compressions of linear ion chains. Combining a dynamical normal-mode harmonic approximation with the invariant-based inverse-engineering technique, we design protocols that minimize the final motional excitation of the ions. This can substantially reduce the transition time between high and low trap-frequency operations, potentially contributing to the development of scalable quantum information processing.