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We consider wave packet propagation in a quantum wire with either an embeddedantidot or an embedded parallel double open quantum dot under the influence ofa uniform magnetic field. The magnetoconductance and the time evolution of anelectron wave packet are calculated based on the Lippmann-Schwinger formalism.This approach allows us to look at arbitrary embedded potential profiles andillustrate the results by performing computational simulations for theconductance and the time evolution of the electron wave packet through thequantum wire. In the double-dot system we observe a long-lived resonance statethat enhances the spatial spreading of the wave packet, and quantumskipping-like trajectories are induced when the envelop function of the wavepacket covers several subbands in appropriate magnetic fields.

Time-dependent magnetotransport of a wave packet in a quantum wire with embedded quantum dots