Robust micro-magnet design for fast electrical manipulations of single spins in quantum dots

Abstract

Tailoring spin coupling to electric fields is central to spintronics and spin-based quantum information processing. We present an optimal micromagnet design that produces appropriate stray magnetic fields to mediate fast electrical spin manipulations in nanodevices. We quantify the practical requirements for spatial field inhomogeneity and tolerance for misalignment with spins, and propose a design scheme to improve the spin-rotation frequency (to exceed 50MHz in GaAs nanostructures). We then validate our design by experiments in separate devices. Our results will open a route to rapidly control solid-state electron spins with limited lifetimes and to study coherent spin dynamics in solids.

References in corpus (16)

• Spintronics: Fundamentals and applications
• Quantum Computation with Quantum Dots
• Driven coherent oscillations of a single electron spin in a quantum dot
• Coherent control of a single electron spin with electric fields
• Electrically driven single electron spin resonance in a slanting Zeeman field
• Control and Detection of Singlet-Triplet Mixing in a Random Nuclear Field
• Electrical control of a long-lived spin qubit in a Si/SiGe quantum dot
• Electric Dipole Induced Spin Resonance in Quantum Dots
• Coherent single electron spin control in a slanting Zeeman field
• Two-qubit Gate of Combined Single Spin Rotation and Inter-dot Spin Exchange in a Double Quantum Dot
• Spin-echo of a single electron spin in a quantum dot
• Hyperfine-mediated gate-driven electron spin resonance
• Two-axis control of a singlet-triplet qubit with an integrated micromagnet
• Efficient C-Phase gate for single-spin qubits in quantum dots
• Fast Electrical Control of Single Electron Spins in Quantum Dots with Vanishing Influence from Nuclear Spins
• Coherent Manipulation of Individual Electron Spin in a Double Quantum Dot Integrated with a Micro-Magnet

Cited by in corpus (51)

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• A fast quantum interface between different spin qubit encodings
• Exchange-interaction of two spin qubits mediated by a superconductor
• Low dephasing and robust micromagnet designs for silicon spin qubits
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• Enhancing the dipolar coupling of a $S$-$T_0$ qubit with a transverse sweet spot
• Orbital effects of a strong in-plane magnetic field on a gate-defined quantum dot
• Crosstalk analysis for simultaneously driven two-qubit gates in spin qubit arrays
• Robust energy selective tunneling readout of singlet triplet qubits under large magnetic field gradient
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• Single spin qubit geometric gate in a silicon quantum dot
• Coherent long-range transfer of two-electron states in ac-driven triple quantum dots
• Dissipationless Nonlinearity in Quantum Material Josephson Diodes
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• Noise-induced collective quantum state preservation in spin qubit arrays
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• Optimal design of nanomagnets for on-chip field gradients
• Pursuing high-fidelity control of spin qubits in natural Si/SiGe quantum dot
• Spin manipulation and spin dephasing in quantum dot integrated with a slanting magnetic field
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• Integration of Cobalt Ferromagnetic Control Gates for Electrical and Magnetic Manipulation of Semiconductor Quantum Dots
• A SWAP Gate for Spin Qubits in Silicon
• Correcting on-chip distortion of control pulses with silicon spin qubits
• Stroboscopically Robust Gates For Capacitively Coupled Singlet-Triplet Qubits
• Charge-induced energy shift of a single-spin qubit under a magnetic-field gradient
• Nanoscale stray fields from micromagnets for optimal spin qubit architecture
• Designs for a two-dimensional Si quantum dot array with spin qubit addressability