Supervisors info:
Φώτιος Διάκονος, Αναπληρωτής Καθηγητής, Τμήμα Φυσικής, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών
Καρανίκας Αλέξανδρος, Αναπληρωτής Καθηγητής, Τμήμα Φυσικής, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών
Εμμανουήλ Φλωράτος, Ομότιμος Καθηγητής, Τμήμα Φυσικής, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών
Summary:
In recent years a great interest has grown towards driven quantum systems due to the fact that they allow the controlled interaction on a system using an external excitation. By these means it is possible to construct setups with predefined transmission properties.
In this thesis we study a t-type dot system that describes the interaction of a quantum dot with an infinite lead at some point assuming that this interaction is time dependent. We focus on the changes of the transmission amplitude as the function of the problem parameter space. We show that this setup can support two Fano resonances at energy values defined by the bound states of the corresponding static problem and the external driving. By using the newly developed Geometric Phase Propagator Approach (GPPA) method we can understand the physical mechanisms behind these Fano resonances. This leads to the management of those resonances so that a great complexity in the transmission amplitude can be achieved.