Universität zu Köln

Psaroudaki, Christina ORCID: 0000-0002-7073-6422 and Panagopoulos, Christos (2021). Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization. Phys. Rev. Lett., 127 (6). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Psaroudaki, Christina UNSPECIFIED orcid.org/0000-0002-7073-6422 UNSPECIFIED Panagopoulos, Christos UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-581739
DOI:	10.1103/PhysRevLett.127.067201
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	127
Number:	6
Date:	2021
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ZERO-VOLTAGE STATE; QUANTIZATION; DYNAMICS Multiple languages Physics, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58173