Ke Wang Postdoctor   E-mail: wk0910(AT)ustc.edu.cn

 

Research Interest:

Experimental condensed matter physics

• • Transport studies on low dimensional
• • Nano-device fabrications
• • Quantum state (charge, spin, valley, etc) manipulation

Education:

Jul. 2020	Ph.D. in Physics, University of Science and Technology of China
	Advisor: Prof. Guo-Ping Guo, Prof. Hai-Ou Li
	Dissertation: Gate-Defined Quantum Dot and Spin Qubit in Low-Dimensional Semiconductors
Jun. 2014	B.S. in Physics, Nanjing University of Science and Technology

Achievements:

• • Design and fabricate gate-defined hole double quantum dot devices in GaAs, and observe phonon-induced interference in the few hole occupation regime with an integrated charge sensing detector
• • Fabricate Hall bar and quantum dot devices with Si-MOS wafers for the application of spin qubit in Si-MOS, achieving electron mobility of 1.5 m2/(V⋅s) through process optimization
• • Realize a single spin qubit in Ge hut-wire hole quantum dot with ultrafast manipulation

Conferences and Workshops:

• 1. "Hole system in GaAs& Silicon quantum dots", Oral presentation, International Workshop on Recent Experimental Progress in Semiconductor Qubits, Hefei, China, September 2017.
• 2. "Germanium hole spin qubit on nanowire quantum dots", Poster presentation, China-Japan Interna-tional Workshop on Quantum Technologies, Hefei, China, August 2018.
• 3. "Magnetotransport studies of density and mobility on Si-nMOS structure", Poster presentation, The 22nd National Semiconductor Physics Conference, Hangzhou, China, September 2019.

Publications:

• 1. Ke Wang*, Gang Xu*, Fei Gao, He Liu, Rong-Long Ma, Xin Zhang, Ting Zhang, Gang Cao, Ting Wang, Jian-Jun Zhang, Xuedong Hu, Hong-Wen Jiang, Hai-Ou Li, Guang-Can Guo, Guo-Ping Guo, "Ultrafast Operations of a Hole Spin Qubit in Ge Quantum Dot", arXiv: 2006.12340 (2020). Under peer review.
• 2. Ke Wang, Jin Leng, Gang Cao, Xue-Dong Hu, Hong-Wen Jiang, Hai-Ou Li, Guang-Can Guo and Guo-Ping Guo, "Observation of phonon-induced interference patterns in a hole double quantum dots"(2020). Manu-script in preparation.
• 3. Ke Wang, Hai-Ou Li, Gang Luo, Xin Zhang, Fang-Ming Jing, Rui-Zi Hu, Yuan Zhou, He Liu, Gui-Lei Wang, Gang Cao, Hong-Wen Jiang and Guo-Ping Guo, "Improving mobility of silicon metal-oxide–semiconductor devices for quantum dots by high vacuum activation annealing", EPL (Europhysics Letters) 130, 27001(2020).
• 4. Ke Wang, Hai-Ou Li, Ming Xiao, Gang Cao and Guo-Ping Guo, "Spin manipulation in semiconductor quantum dots qubit", Chinese Physics B 27, 090308 (2018).
• 5. Gang Xu, Fei Gao, Ke Wang, Ting Zhang, He Liu, Gang Cao, Ting Wang, Jian-Jun Zhang, Hong-Wen Jiang, Hai-Ou Li and Guo-Ping Guo, "Hole spin in tunable Ge hut wire double quantum dot", Applied Physics Ex-press 13, 065002 (2020).
• 6. Yan Li, Shu-Xiao Li, Fei Gao, Hai-Ou Li, Gang Xu, Ke Wang, Di Liu, Gang Cao, Ming Xiao, Ting Wang, Jian-Jun Zhang, Guang-Can Guo, and Guo-Ping Guo, "Coupling a Germanium Hut Wire Hole Quantum Dot to a Su-perconducting Microwave Resonator", Nano letter 18, 2091 (2018).
• 7. Yan Li, Shu-Xiao Li, Fei Gao, Hai-Ou Li, Gang Xu, Ke Wang, He Liu, Gang Cao, Ming Xiao, Ting Wang, Jian-Jun Zhang, and Guo-Ping Guo, "Measuring the complex admittance and tunneling rate of a germanium hut wire hole quantum dot", Journal of Applied Physics 123, 174305 (2018).
• 8. Xin Zhang, Hai-Ou Li, Ke Wang, Gang Cao, Ming Xiao and Guo-Ping Guo, "Qubits based on semiconductor quantum dots", Chinese Physics B 27, 020305 (2018).
• 9. Xin Zhang, Hai-Ou Li, Ke Wang, Gang Cao and Guo-Ping Guo "Quantum computation based on semiconduc-tor quantum dots", SCIENTIA SINICA Informationis 47, 1255 (2017).
• 10. Jie You, Hai-Ou Li, Ke Wang, Gang Cao, Xiang-Xiang Song, Ming Xiao, and Guo-Ping Guo, "Suppression of low-frequency charge noise in gates-defined GaAs quantum dots", Applied Physics Letters 107, 233104 (2015).