We theoretically investigate the motional excitation of a single ion caused by spring-constant
and position fluctuations of a harmonic trap during trap shuttling processes. A detailed study …

We design fast trajectories of a trap to transport two ions using a shortcut-to-adiabaticity
technique based on invariants. The effects of anharmonicity are analyzed first perturbatively …

We investigate the fast transport of an atom or a packet of atoms by different kinds of
nonharmonic traps including power-law traps. The study is based on the reverse …

We investigate the excitation of a quantum particle shuttled in a harmonic trap with weak
spring-constant colored noise. The Ornstein-Uhlenbeck model for the noise correlation …

This PhD thesis reports on two experiments in the field of quantum information processing
using trapped calcium ions. In addition, the text covers the setup and characterization of a …

Shortcuts to adiabaticity (STA) provides the possibility of high accuracy manipulation of
phonon states in ion traps. We propose a scheme realized experimentally for manipulating …

We report a theoretical study of a double-well Ramsey interferometer using internal state
labelling. We consider the use of a thermal ensemble of cold atoms rather than a Bose …

We engineer the fast rotation of an effectively one-dimensional ion trap for a predetermined
rotation angle and time, avoiding thefinal excitation of the trapped ion. Different schemes are …

We investigate the effect of slow spring-constant drifts of the trap used to shuttle two ions of
different mass. We design transport protocols to suppress or mitigate the final excitation …

We inverse engineer fast rotations of a transversally tight, linear trap with two ions for a
predetermined rotation angle and time, avoiding final excitation. Different approaches are …