Charge readout of a vertical quantum dot using a laterally weakly coupled quantum dot as a detector

T. Kodera; Y. Iwai; W. G. Van Der Wiel; T. Obata; T. Hatano; S. Tarucha

doi:10.1063/1.2355240

Charge readout of a vertical quantum dot using a laterally weakly coupled quantum dot as a detector

T. Kodera, Y. Iwai, W. G. Van Der Wiel, T. Obata, T. Hatano, S. Tarucha

SCI - Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

We have fabricated laterally coupled four-vertical-quantum-dot devices that can be used for reading out electron charge and spin information of quantum dots. In these devices, the inter-dot coupling is tunable with a coupling gate voltage and the number of electrons in each dot is tunable with a side gate voltage. We first use two of the four dots to confirm the effect of the inter-dot coupling strength on the stability diagram. We then use one of the two dots as a single electron transistor (SET) charge detector to detect the charge information of the other dot.

Original language	English
Title of host publication	LOW TEMPERATURE PHYSICS
Subtitle of host publication	24th International Conference on Low Temperature Physics - LT24
Pages	1434-1435
Number of pages	2
DOIs	https://doi.org/10.1063/1.2355240
Publication status	Published - 2006 Dec 1
Event	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: 2006 Aug 10 → 2006 Oct 17

Publication series

Name	AIP Conference Proceedings
Volume	850
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/Territory	United States
City	Orlando, FL
Period	06/8/10 → 06/10/17

Keywords

Quantum dot
Single electron transistor

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2355240

Cite this

Kodera, T., Iwai, Y., Van Der Wiel, W. G., Obata, T., Hatano, T., & Tarucha, S. (2006). Charge readout of a vertical quantum dot using a laterally weakly coupled quantum dot as a detector. In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 (pp. 1434-1435). (AIP Conference Proceedings; Vol. 850). https://doi.org/10.1063/1.2355240

Charge readout of a vertical quantum dot using a laterally weakly coupled quantum dot as a detector. / Kodera, T.; Iwai, Y.; Van Der Wiel, W. G. et al.

LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. 2006. p. 1434-1435 (AIP Conference Proceedings; Vol. 850).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kodera, T, Iwai, Y, Van Der Wiel, WG, Obata, T, Hatano, T & Tarucha, S 2006, Charge readout of a vertical quantum dot using a laterally weakly coupled quantum dot as a detector. in LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. AIP Conference Proceedings, vol. 850, pp. 1434-1435, LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, Orlando, FL, United States, 06/8/10. https://doi.org/10.1063/1.2355240

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AU - Hatano, T.

AU - Tarucha, S.

PY - 2006/12/1

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N2 - We have fabricated laterally coupled four-vertical-quantum-dot devices that can be used for reading out electron charge and spin information of quantum dots. In these devices, the inter-dot coupling is tunable with a coupling gate voltage and the number of electrons in each dot is tunable with a side gate voltage. We first use two of the four dots to confirm the effect of the inter-dot coupling strength on the stability diagram. We then use one of the two dots as a single electron transistor (SET) charge detector to detect the charge information of the other dot.

AB - We have fabricated laterally coupled four-vertical-quantum-dot devices that can be used for reading out electron charge and spin information of quantum dots. In these devices, the inter-dot coupling is tunable with a coupling gate voltage and the number of electrons in each dot is tunable with a side gate voltage. We first use two of the four dots to confirm the effect of the inter-dot coupling strength on the stability diagram. We then use one of the two dots as a single electron transistor (SET) charge detector to detect the charge information of the other dot.

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KW - Single electron transistor

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Charge readout of a vertical quantum dot using a laterally weakly coupled quantum dot as a detector

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