Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization

Area of Science:

• Condensed Matter Physics
• Quantum Information Science
• Nanotechnology

Background:

• Quantum computing requires robust and scalable qubit architectures.
• Nanoscale magnetic textures offer potential for novel quantum information processing.

Purpose of the Study:

• To introduce a new class of quantum logic elements based on skyrmions.
• To explore the properties and potential applications of skyrmion qubits for quantum computing.

Main Methods:

• Investigating nanoscale magnetization textures (skyrmions) as qubit candidates.
• Analyzing the quantum degree of helicity for information storage.
• Exploring parameter space to propose skyrmion qubit variants.
• Simulating microwave pulses for single-qubit gate generation.
• Developing multiqubit schemes for scalable architectures.

Main Results:

• Demonstrated skyrmion qubits utilizing the quantum degree of helicity.
• Identified two skyrmion qubit variants with tunable states via electric and magnetic fields.
• Proposed microwave pulse sequences for generating single-qubit gates.
• Outlined scalable multiqubit architectures with tailored couplings.

Conclusions:

• Skyrmion qubits offer a promising platform for quantum processors.
• Key features include scalability, microwave controllability, fast operation, and nonvolatile readout.
• This work advances the development of practical quantum computing hardware.