Isolated quantum dot in application to terahertz photon counting
| Autor: | H. Hashiba, Susumu Komiyama, Vladimir Antonov, L. Kulik, P. Kleinschmid, Alexander Tzalenchuk, S. Giblin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Physics
Research Groups and Centres\Physics\Low Temperature Physics Photon Terahertz radiation Faculty of Science\Physics Coulomb blockade Electrometer Condensed Matter Physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Photon counting Electronic Optical and Magnetic Materials Terahertz spectroscopy and technology Quantum dot Black-body radiation Atomic physics |
| Zdroj: | Physical Review B, 73 (8) |
| DOI: | 10.1103/PhysRevB.73.081310 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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