Transient behavior of pulse propagation in a double-quantum-dot Aharonov-Bohm interferometer

► We analyze a Gaussian pulse scattered by an Aharonov-Bohm interferometer. ► A dynamical Fano profile is found traveling embedded in the scattered pulse. ► The shape of the scattered pulse is controlled by varying the Aharonov-Bohm phase. ► The energy and width of the Fano resonance govern the transients of the packet. ► The shape of the scattered wavepacket reveals information of the molecular states.