A study of the quantum dot in application to terahertz single photon counting

H. Hashiba, V. Antonov, L. Kulik, S. Komiyama

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We present an experimental study of a quantum dot for application to a single photon terahertz detector. A GaAs/AlGaAs quantum dot of ∼1 micrometer size is defined by mesa patterning and metal gates. The charge polarization of the QD induced by the absorption of individual photons is detected by a metallic single electron transistor. We have investigated the operation of the QD at different rates of the external terahertz photon flux and at various temperatures. It was found that a state of the nearly isolated QD can potentially be used for counting individual terahertz photons. The operation of the detector is however strongly affected by the exact composition of the QD excitation states.

Original languageEnglish
Title of host publicationMS+S 2006 - Controllable Quantum States
Subtitle of host publicationMesoscopic Superconductivity and Spintronics, Proceedings of the International Symposium
PublisherWorld Scientific Publishing Co Pte Ltd
Pages209-214
Number of pages6
ISBN (Print)9812814612, 9789812814616
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event4th International Symposium on Mesoscopic Superconductivity and Spintronics, MS+S 2006 - Atsugi, Japan
Duration: 27 Feb 20062 Mar 2006

Publication series

NameMS+S 2006 - Controllable Quantum States: Mesoscopic Superconductivity and Spintronics, Proceedings of the International Symposium

Conference

Conference4th International Symposium on Mesoscopic Superconductivity and Spintronics, MS+S 2006
Country/TerritoryJapan
CityAtsugi
Period27/02/062/03/06

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