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

Psaroudaki, Christina and Panagopoulos, Christos (2021) Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization. Physical Review Letters, 127 (6). Art. No. 067201. ISSN 0031-9007. doi:10.1103/physrevlett.127.067201.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Psaroudaki, Christina0000-0002-7073-6422
Panagopoulos, Christos0000-0003-4692-3233
Additional Information:© 2021 American Physical Society. Received 30 March 2021; accepted 30 June 2021; published 4 August 2021. We thank Martino Poggio, So Takei, Daniel Loss, Ivar Martin and Markus Garst for useful discussions. C. Psaroudaki has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 839004. C. Panagopoulos acknowledges support from the Singapore National Research Foundation (NRF) NRF-Investigatorship (No. NRFNRFI2015-04) and Singapore MOE Academic Research Fund Tier 3 Grant No. MOE2018-T3-1-002.
Funding AgencyGrant Number
Marie Curie Fellowship839004
National Research Foundation (Singapore)NRFNRFI2015-04
Ministry of Education (Singapore)MOE2018-T3-1-002
Issue or Number:6
Record Number:CaltechAUTHORS:20210823-203015407
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:110389
Deposited By: Tony Diaz
Deposited On:24 Aug 2021 17:52
Last Modified:24 Aug 2021 17:52

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