Single electron spin addressing by using photon-assisted-tunneling in a double quantum dot including a micro-magnet
✍ Scribed by Yun-Sok Shin; Toshiaki Obata; Michel Pioro-Ladrière; Yasuhiro Tokura; Roland Brunner; Toshihiro Kubo; Katsuharu Yoshida; Seigo Tarucha
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 298 KB
- Volume
- 42
- Category
- Article
- ISSN
- 1386-9477
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✦ Synopsis
In a numerical simulation we demonstrate spin readout by using photon assisted tunneling (PAT). We are using a realistic double quantum dot design including a micro-magnet. The micro-magnet generates different Zeeman fields between the two dots. If the photon frequency matches the energy difference of either the up-spin or the down-spin state between the two dots, the electron will be delocalized over the two dots by inter-dot PAT. We numerically simulate the micro-magnet induced stray field for various micro-magnet parameters and calculate the PAT spin readout performance.