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  4. Electron-spin-resonance meanderlines for effective spin control in Si quantum dots for large-scale qubit applications
 
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Electron-spin-resonance meanderlines for effective spin control in Si quantum dots for large-scale qubit applications

Journal
Applied Physics Letters
Journal Volume
119
Journal Issue
24
Date Issued
2021
Author(s)
Chang Y.-C
Huang I
Chen C.-Y
Lin M.-J
SHIH-YUAN CHEN  
JIUN-YUN LI  
DOI
10.1063/5.0072414
URI
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121964899&doi=10.1063%2f5.0072414&partnerID=40&md5=3989862850d81dbc2ff043c442c08e6b
https://scholars.lib.ntu.edu.tw/handle/123456789/607226
Abstract
Coherent control of electron spins in multiple quantum dots (QDs) is critical for realizing large-scale spin qubits. The manipulation of electron spins in Si QDs can be achieved by electron spin resonance (ESR). While the effective spin control over a single qubit has been demonstrated, the architecture of ESR lines for large-scale spin qubits has yet to be demonstrated. In this paper, we propose an ESR meanderline for large-scale Si QDs. Simulation results show that magnetic fields can be effectively enhanced with low electric fields using a meanderline, enabling high-fidelity and low-noise control over electron spins in a 50-qubit system. Reflection coefficients of ESR meanderlines by on-wafer microwave measurements show low loss (-7 dB) for a 3-qubit device at a frequency range of 10 to 50 GHz. ? 2021 Author(s).
Subjects
Electric fields
Electron spin resonance spectroscopy
Electrons
Electrospinning
Magnetic moments
Nanocrystals
Quantum optics
Qubits
Semiconductor quantum dots
Silicon wafers
Coherent control
Electron-spin resonance
Large-scales
Meander line
Multiple quantum dots
Resonance line
Si quantum dot
Single qubits
Spin control
Spin qubit
Spin dynamics
Type
journal article

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