title: Detection and control of charge states in a quintuple quantum dot.
abstract: A semiconductor quintuple quantum dot with two charge sensors and an additional contact to the center dot from an electron reservoir is fabricated to demonstrate the concept of scalable architecture. This design enables formation of the five dots as confirmed by measurements of the charge states of the three nearest dots to the respective charge sensor. The gate performance of the measured stability diagram is well reproduced by a capacitance model. These results provide an important step towards realizing controllable large scale multiple quantum dot systems.
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
authors.forename: Takumi
authors.initials: T
authors.lastname: Ito
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Otsuka
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Amaha
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
authors.forename: Matthieu R
authors.initials: MR
authors.lastname: Delbecq
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Nakajima
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Yoneda
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
authors.forename: Kenta
authors.initials: K
authors.lastname: Takeda
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: Giles
authors.initials: G
authors.lastname: Allison
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
authors.forename: Akito
authors.initials: A
authors.lastname: Noiri
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
authors.forename: Kento
authors.initials: K
authors.lastname: Kawasaki
authors.affiliation: Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.|Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.|Quantum-Phase Electronics Center, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.|Institute for Nano Quantum Information Electronics, University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505, Japan.
authors.forename: Seigo
authors.initials: S
authors.lastname: Tarucha