arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0710.3986cond-mat.mes-hall
收藏

量子点单电子自旋共振的微波波段片上线圈技术

Microwave band on-chip coil technique for single electron spin resonance in a quantum dot

Toshiaki Obata, Michel Pioro-Ladriere, Toshihiro Kubo, Katsuharu Yoshida, Yasuhiro Tokura, Seigo Tarucha

摘要:

研制了微波波段片上微线圈,用于单量子点单电子自旋共振测量。通过实验和仿真的方式,对各种线圈设计的特征阻抗和电磁场分布等基本特性进行了检查。该组合装置在稀释温度下的实验中运行良好。研究了回波损耗和库仑阻塞电流的频率响应。线圈和量子点之间的电容耦合引起光子辅助隧穿,其信号可以大大重叠电子自旋共振信号。为了抑制光子辅助隧穿效应,发展了一种补偿微波电场的技术。从库仑阻塞振荡的测量中证实了这种技术的良好性能。

英文摘要:

Microwave band on-chip microcoils are developed for the application to single electron spin resonance measurement with a single quantum dot. Basic properties such as characteristic impedance and electromagnetic field distribution are examined for various coil designs by means of experiment and simulation. The combined setup operates relevantly in the experiment at dilution temperature. The frequency responses of the return loss and Coulomb blockade current are examined. Capacitive coupling between a coil and a quantum dot causes photon assisted tunneling, whose signal can greatly overlap the electron spin resonance signal. To suppress the photon assisted tunneling effect, a technique for compensating for the microwave electric field is developed. Good performance of this technique is confirmed from measurement of Coulomb blockade oscillations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑