Quantum dots investigated with charge detection techniques

The detection of the quantum dot charge state using a quantum point contact charge detector has opened a new exciting route for the investigation of quantum dot devices in recent years. In particular, time-resolved charge detection allowed the precise measurement of quantum dot shot noise at sub-fem...

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Bibliographic Details
Published in:arXiv.org 2009-05
Main Authors: Ihn, T, Gustavsson, Simon, Gasser, Urszula, Küng, Bruno, Müller, Thomas, Schleser, Roland, Sigrist, Martin, Shorubalko, Ivan, Leturcq, Renaud, Ensslin, Klaus
Format: Article
Language:English
Subjects:
Data processing
Electrons
Point contact
Quantum dots
Quantum phenomena
Shot noise
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Summary:The detection of the quantum dot charge state using a quantum point contact charge detector has opened a new exciting route for the investigation of quantum dot devices in recent years. In particular, time-resolved charge detection allowed the precise measurement of quantum dot shot noise at sub-femtoampere current levels, and the full counting statistics of the current. The technique can be applied to different material systems and holds promise for the future application in quantum dot based quantum information processing implementations. We review recent experiments employing this charge detection technique, including the self-interference of individual electrons and back-action phenomena.
ISSN:2331-8422