Coherent charge oscillation in a semiconductor double quantum dot

Toshiaki Hayashi; Toshimasa Fujisawa; H. D. Cheong; Y. H. Jeong; Y. Hirayama

doi:10.1109/TNANO.2004.828551

Coherent charge oscillation in a semiconductor double quantum dot

Toshiaki Hayashi, Toshimasa Fujisawa, H. D. Cheong, Y. H. Jeong, Y. Hirayama

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The time evolution of a pulse-excited charge qubit in a semiconductor double quantum dot is investigated. All-electrical initialization and coherent gate control of the system are achieved, and coherent charge oscillation is observed through the transport measurements. The oscillation frequency and decoherence time T₂ are estimated by fitting the transport data with a simple model. Possible decoherence mechanisms in a charge qubit system are pointed out and discussed in detail.

Original language	English
Pages (from-to)	300-303
Number of pages	4
Journal	IEEE Transactions on Nanotechnology
Volume	3
Issue number	2
DOIs	https://doi.org/10.1109/TNANO.2004.828551
Publication status	Published - 2004 Jun 1
Externally published	Yes

Keywords

Charge qubit
Decoherence
Double quantum dot (QD)

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering

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