A Double Quantum Dot as an Artificial Two-Level System
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概要
- 論文の詳細を見る
We study an artificial two-level system formed by a double quantum dot. Microwave spectroscopy experiments are discussed, in which we show that the inter-dot coupling can be tuned from ionic-like to covalent-like. The current through the double dot system is dependent on the applied microwave power and, in case of strong inter-dot coupling, the separation between the bonding and anti-bonding state is power dependent as well. We measure the elastic and inelastic transitions between the two levels. The inelastic transition rates are well described by Bose-Einstein statistics. Acoustic phonons are the most effectively coupled bosons in the solid-state environment of the two-level system.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2001-03-30
著者
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Tarucha Seigo
Ntt Basic Research Laboratories
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Kouwenhoven Leo
Department Of Applied Physics And Dimes Delft University Of Technology
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Fujisawa Toshimasa
Ntt Basic Research Laboratories
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Van Der
Departement Wiskunde Katholieke Universiteit Leuven
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Wiel Wilfred
Department of Applied Physics, DIMES, and ERATO Mesoscopic Correlation Project, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands
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Tarucha Seigo
NTT Basic Research Laboratories, Atsugi-shi, Kanagawa 243-0198, Japan
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Fujisawa Toshimasa
NTT Basic Research Laboratories, Atsugi-shi, Kanagawa 243-0198, Japan
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