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(In Japanese)半導体人工原子・分子における高周波電子スピン操作

Research report code R070000259
File No. R070000259
Posted date Apr 11, 2008
  • (In Japanese)Wilfred G.van der Wiel
  • (In Japanese)Wilfred G.van der Wiel
  • (In Japanese)Tokyo University
  • (In Japanese)University of Twente
Research organization
  • (In Japanese)Tokyo University
  • (In Japanese)University of Twente
Report name (In Japanese)半導体人工原子・分子における高周波電子スピン操作
Technology summary (In Japanese)The aim of the project is high-frequency(GHz) electron-spin manipulation in semiconductor few-electron quantum dots. The main motivation of this proposal is formed by the possible application of electron spins as basic building blocks for quantum logic. One concrete aim is to rotate a single-electron spin in a few-electron quantum by means of a locally generated electron spin resonance (ESR) field. A key experiment that still needs to be done is the determination of the single-electron spin decoherence time T2 in a semiconductor environment. The next logical step after studying single dots is to look at double dot systems. The entaglement of two electron spins using tunnel-coupled quantum dots is of great importance for the realization of the XOR (or controlled-NOT) gate operation.

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Research field
  • Election spin resonance in general
Published papers related (In Japanese)(1) W. G. van der Wiel et al., Rev. Mod. Phys. 75, 1 (2003)[146 times cited]
(2) T. Kodera, W. G. van der Wiel, K. Ono, S. Sakaki, T. Fujisawa and S. Tarucha, Physical E. 22, 518 (2004).
(3) T. Kodera, W. G. van der Wiel, T. Maruyama, Y. Hirayama and S. Tarucha, in Realizing controllable quantum states, H. Takayanagi, J. Nitta (eds.), pp. 445-450, World Scientific Publishing, Singapore (2005).
(4) Y. Tokura, W. G. van der Wiel, T. Obata and S. Tarucha, Phys. Rev. Lett., in press: cond-mat/0510411 (2005).
(5) W. J. M. Naber, T. Fujisawa, H. W. Liu and W. G. van der Wiel, submitted to Physical Review Letters: cond-mat./0601158 (2006).
Research project
  • Precursory Research for Embryonic Science and Technology.;Structural Ordering and Physical Properties, Nanostructure and Material Property, Light and Control.
Information research report
  • (In Japanese)Wilfred G.van der Wiel. 半導体人工原子・分子における高周波電子スピン操作. ナノテクノロジー分野3領域合同研究報告会 講演要旨集 「秩序と物性」「ナノと物性」「光と制御」領域 (研究期間:2002-2005), 2006 . p.18 - 19.