Spin blockade and coherent dynamics of high-spin states in a three-electron double quantum dot

Autor:	Chen, Bao-Bao, Wang, Bao-Chuan, Cao, Gang, Li, Hai-Ou, Xiao, Ming, Guo, Guang-Can, Jiang, Hong-Wen, Hu, Xuedong, Guo, Guo-Ping
Rok vydání:	2016
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 95, 035408 (2017)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.95.035408
Popis:	Asymmetry in a three-electron double quantum dot (DQD) allows spin blockade, when spin-3/2 (quadruplet) states and spin-1/2 (doublet) states have different charge configurations. We have observed this DQD spin blockade near the (1,2)-(2,1) charge transition using a pulsed-gate technique and a charge sensor. We then use this spin blockade to detect Landau-Zener-St\"uckelberg (LZS) interference and coherent oscillations between the spin quadruplet and doublet states. Such studies add to our understandings of coherence and control properties of three-spin states in a double dot, which in turn would benefit the explorations into various qubit encoding schemes in semiconductor nanostructures. Comment: 14 pages, 4 figures, and Supplementary Materials
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1610.04940 Zobrazit plný text záznamu View this record from Arxiv