Phase measurement of photon-assisted tunneling through a quantum dot

Details Phase measurement of photon-assisted tunneling through a quantum dot Phase measurement of photon-assisted tunneling through a quantum dot

1997-06-23

arxiv.org/abs/cond-mat/9706223v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages using latex2e and EuroPhys.sty. Uses epsf to include 5 figures (submitted to Europhys. Lett.)

Scientific paper

10.1103/PhysRevB.58.9619

Recent double-slit interference experiments have demonstrated the possibility of probing the phase of the complex transmission coefficient of a quantum dot via the Aharonov-Bohm effect. We propose an extension of these experiments: an ac voltage imposed on the side gate with the concomitant photonic sidebands leads to additional structure both in the amplitude and in the phase of the Aharonov-Bohm signal. Observation of these effects would be a definitive proof of coherent absorption and reemission of photons from the ac source.

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