Full control of quadruple quantum dot circuit charge states in the single electron regime

M. R. Delbecq, T. Nakajima, T. Otsuka, S. Amaha, J. D. Watson, M. J. Manfra, S. Tarucha

研究成果: Article査読

35 被引用数 (Scopus)

抄録

We report the realization of an array of four tunnel coupled quantum dots in the single electron regime, which is the first required step toward a scalable solid state spin qubit architecture. We achieve an efficient tunability of the system but also find out that the conditions to realize spin blockade readout are not as straightforwardly obtained as for double and triple quantum dot circuits. We use a simple capacitive model of the series quadruple quantum dots circuit to investigate its complex charge state diagrams and are able to find the most suitable configurations for future Pauli spin blockade measurements. We then experimentally realize the corresponding charge states with a good agreement to our model.

本文言語English
論文番号183111
ジャーナルApplied Physics Letters
104
18
DOI
出版ステータスPublished - 2014 5 5
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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