Ultrafast and Electrically Tunable Rabi Frequency in a Germanium Hut Wire Hole Spin Qubit

Liu, He1,2,3; Wang, Ke1,2,3; Gao, Fei4,5,6; Leng, Jin1,2,3; Liu, Yang1,2,3; Zhou, Yu-Chen1,2,3; Cao, Gang1,2,3,7; Wang, Ting6,7; Zhang, Jianjun5,7; Huang, Peihao8,9,10; Li, Hai-Ou1,2,3,7; Guo, Guo-Ping1,2,3,7,11

2023-05-10

10.1021/acs.nanolett.3c00213

NANO LETTERS   影响因子和分区

1530-6984

1530-6992

Hole spin qubits based on germanium (Ge) have strong tunable spin-orbit interaction (SOI) and ultrafast qubit operation speed. Here we report that the Rabi frequency (f Rabi) of a hole spin qubit in a Ge hut wire (HW) double quantum dot (DQD) is electrically tuned through the detuning energy (6) and middle gate voltage (VM). fRabi gradually decreases with increasing 6; on the contrary, f Rabi is positively correlated with VM. We attribute our results to the change of electric field on SOI and the contribution of the excited state in quantum dots to fRabi. We further demonstrate an ultrafast f Rabi exceeding 1.2 GHz, which indicates the strong SOI in our device. The discovery of an ultrafast and electrically tunable fRabi in a hole spin qubit has potential applications in semiconductor quantum computing.

Ge hut wires hole spin qubit electric tunable Rabi frequency ultrafast spin qubit control

SCI ; EI

英语

NI论文

通讯

National Natural Science Foundation of China["12074368","92165207","12034018","92265113"] ; Innovation Program for Quantum Science and Technology[2021ZD0302300] ; Anhui Province Natural Science Foundation[2108085J03] ; National Natural Science Foundation of Chi[KQTD20200820113010023] ; Shenzhen Science and Technology Program[2019B121203002] ; Guangdong Provincial Key Laboratory[11904157]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000981775900001

AMER CHEMICAL SOC

20231914061033

Electric fields ; Excited states ; Germanium ; Nanocrystals ; Qubits ; Semiconductor quantum dots

Metal Forming:535.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electricity: Basic Concepts and Phenomena:701.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light, Optics and Optical Devices:741 ; Nanotechnology:761 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Crystalline Solids:933.1

MATERIALS SCIENCE

Web of Science

1.Univ Sci & Technol China, CAS Key Lab Quantum Informat, Hefei 230026, Anhui, Peoples R China
2.Univ Sci & Technol China, CAS Ctr Excellence, Hefei 230026, Anhui, Peoples R China
3.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum Ph, Hefei 230026, Anhui, Peoples R China
4.Qilu Inst Technol, Jinan 250200, Peoples R China
5.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
6.Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China
7.Univ Sci & Technol China, Hefei Natl Lab, Hefei 230088, Peoples R China
8.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
9.Southern Univ Sci & Technol, Guangdong Prov Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
10.Int Quantum Acad, Shenzhen 518048, Peoples R China
11.Origin Quantum Comp Co Ltd, Hefei 230026, Anhui, Peoples R China

Liu, He,Wang, Ke,Gao, Fei,et al. Ultrafast and Electrically Tunable Rabi Frequency in a Germanium Hut Wire Hole Spin Qubit[J]. NANO LETTERS,2023,23(9):3810-3817.

Liu, He.,Wang, Ke.,Gao, Fei.,Leng, Jin.,Liu, Yang.,...&Guo, Guo-Ping.(2023).Ultrafast and Electrically Tunable Rabi Frequency in a Germanium Hut Wire Hole Spin Qubit.NANO LETTERS,23(9),3810-3817.

Liu, He,et al."Ultrafast and Electrically Tunable Rabi Frequency in a Germanium Hut Wire Hole Spin Qubit".NANO LETTERS 23.9(2023):3810-3817.