Spin manipulation in semiconductor quantum dots qubit<xref rid="cpb_27_9_090308_fn1" ref-type="fn">*</xref><fn id="cpb_27_9_090308_fn1"><label>*</label><p>Project supported by the National Key R&D Program of China (Grant No. 2016YFA0301700), the National Natural Science Foundation of China (Grant Nos. 11674300, 61674132, 11575172, and 11625419), and the Fundamental Research Fund for the Central Universities, China.</p></fn>

Spin manipulation in semiconductor quantum dots qubit**

Project supported by the National Key R&D Program of China (Grant No. 2016YFA0301700), the National Natural Science Foundation of China (Grant Nos. 11674300, 61674132, 11575172, and 11625419), and the Fundamental Research Fund for the Central Universities, China.

Wang Ke, Li Hai-Ou, Xiao Ming, Cao Gang^†, Guo Guo-Ping^‡

(color online) Schematics of electrochemical potential. (a) Initial state of double quantum dots. Each dot is occupied by one electron and the electron in the right dot is spin-up while the state of the left electron is uncertain. Panels (b) and (c) represent two different situations. When a spin-down electron transits to a dot, it can transfer to the right one without restriction. However, a spin-up electron is forbidden from crossing due to the Pauli spin blockade.