Abstract
We introduce a new class of primitive building blocks for realizing quantum logic elements based on nanoscale magnetization textures called skyrmions. In a skyrmion qubit, information is stored in the quantum degree of helicity, and the logical states can be adjusted by electric and magnetic fields, offering a rich operation regime with high anharmonicity. By exploring a large parameter space, we propose two skyrmion qubit variants depending on their quantized state. We discuss appropriate microwave pulses required to generate single-qubit gates for quantum computing, and skyrmion multiqubit schemes for a scalable architecture with tailored couplings. Scalability, controllability by microwave fields, operation time scales, and readout by nonvolatile techniques converge to make the skyrmion qubit highly attractive as a logical element of a quantum processor.
- Received 30 March 2021
- Accepted 30 June 2021
DOI:https://doi.org/10.1103/PhysRevLett.127.067201
© 2021 American Physical Society
Physics Subject Headings (PhySH)
synopsis
Magnetic Skyrmions Could Act as Qubits
Published 4 August 2021
Predictions suggest that magnetic quasiparticles known as skyrmions could provide the basis for a novel quantum-computing platform.
See more in Physics