Hole spin in tunable Ge hut wire double quantum dot

被引：12

作者：

Xu, Gang ^{[1
,2
]}

Gao, Fei ^{[3
,4
]}

Wang, Ke ^{[1
,2
]}

Zhang, Ting ^{[1
,2
]}

Liu, He ^{[1
,2
]}

Cao, Gang ^{[1
,2
]}

Wang, Ting ^{[3
,4
]}

Zhang, Jian-Jun ^{[3
,4
]}

Jiang, Hong-Wen ^{[5
]}

Li, Hai-Ou ^{[1
,2
]}

Guo, Guo-Ping ^{[1
,2
,6
]}

机构：

[1] Univ Sci & Technol China, CAS Key Lab Quantum Informat, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, CAS Ctr Excellence & Synerget Innovat Ctr Quantum, Hefei 230026, Anhui, Peoples R China

[3] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[4] Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China

[5] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[6] Origin Quantum Comp Co Ltd, Hefei 230026, Anhui, Peoples R China

来源：

APPLIED PHYSICS EXPRESS | 2020年 / 13卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Ge double quantum dot; spin blockade; electric dipole spin resonance; hole spin; spin-orbit interaction;

D O I：

10.35848/1882-0786/ab8b6d

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Holes in germanium (Ge) exhibit strong spin-orbit interaction, which can be exploited for fast and all-electrical manipulation of spin states. Here, we report transport experiments in a tunable Ge hut wire hole double quantum dot. We observe the signatures of Pauli spin blockade (PSB) with a large singlet-triplet energy splitting of similar to 1.1 meV and extract the g factor. By analyzing the PSB leakage current, we obtain a spin-orbit length of similar to 40-100 nm. Furthermore, we demonstrate the electric dipole spin resonance. These results lay a solid foundation for implementing high quality tunable hole spin-orbit qubits.

引用

页数：5

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