Hashiba, H., Antonov, V., Kulik, L., Tzalenchuk, A., Kleinschmid, P., Giblin, S. and Komiyama, S. (2006) Isolated quantum dot in application to terahertz photon counting. Physical Review B, 73 (8).
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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. © 2006 The American Physical Society.
This is a Submitted version This version's date is: 1/1/2006 This item is not peer reviewed
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