A quantum dot as a sensitive terahertz detector

H. Hashiba, B. Das, J. T. Nicholls, V. Antonov, L. Kulik, S. Komiyama

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The formation of 1 μm-diameter quantum dot (QD), defined by mesa patterning and metal gates in a GaAs/AlGaAs heterostructure, is studied using a capacitively coupled aluminium single-electron transistor (SET). The SET senses the charge of the QD at different gate potentials and can identify stable and metastable states of the QD. An electrostatic model gives a good description of the stable states, leaving, however, some unanswered questions concerning the metastable states. The application of the device for the sensitive detection of terahertz radiation is discussed.

Original languageEnglish
Pages (from-to)644-646
Number of pages3
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number1-2
Publication statusPublished - Aug 2006
Externally publishedYes


  • Coulomb blockade
  • Quantum dot
  • Terahertz


Dive into the research topics of 'A quantum dot as a sensitive terahertz detector'. Together they form a unique fingerprint.

Cite this