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)
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