Submitted Accepted Published Unpublished
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Abstract: We report a transport experiment on the Fano effect in a
quantum connecting wire (QW) with a side-coupled quantum dot
(QD). The Fano resonance occurs between the QD and the
``T-shaped" junction in the wire, and the transport detects
antiresonance or a forward scattered part of the wave function.
While it is more difficult to tune the shape of the resonance in
this geometry than in the previously reported
Aharonov-Bohm-ring-type interferometer, the resonance purely
consists of the coherent part of transport. Utilizing this
advantage, we have quantitatively analyzed the temperature
dependence of the Fano effect by including the thermal
broadening and the decoherence. We have also proven that this
geometry can be a useful interferometer for measuring the phase
evolution of electrons at a QD.