Isolated quantum dot in application to terahertz photon counting
نویسندگان
چکیده
We present an experimental study of a large quantum dot QD capacitively coupled to an aluminum single electron transistor SET and irradiated with terahertz radiation from a blackbody source. The SET is used as a noninvasive electrometer sensitive to a single-charge fluctuation on the QD. Qualitatively different regimes of QD confinement have been identified from the SET response. We demonstrate that the state of a nearly isolated QD can potentially be used for counting individual terahertz photons.
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تاریخ انتشار 2006