Single-qubit remote manipulation by magnetic solitons

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:400

Article; Proceedings Paper

Cuccoli, Alessandro^1,2,3  Nuzzi, Davide^1,2  Vaia, Ruggero^2,4  Verrucchi, Paola^1,2,4 

[1] Univ Florence, Dipartimento Fis & Astron, I-50019 Sesto Fiorentino, FI, Italy

[2] Ist Nazl Fis Nucl, Sez Firenze, I-50019 Sesto Fiorentino, FI, Italy

[3] Univ Florence, Dipartimento Fis & Astron, CNISM, I-50019 Sesto Fiorentino, FI, Italy

[4] CNR, Ist Sistemi Complessi, I-50019 Sesto Fiorentino, FI, Italy

关键词: Spin chains;    Solitons;    Quantum gates;   

DOI  :  10.1016/j.jmmm.2015.08.023

来源: Elsevier

【 摘 要 】

Magnetic solitons can constitute a means for manipulating qubits from a distance. This would overcome the necessity of directly applying selective magnetic fields, which is unfeasible in the case of a matrix of qubits embedded in a solid-state quantum device. If the latter contained one-dimensional Heisenberg spin chains coupled to each qubit, one can originate a soliton in a selected chain by applying a time-dependent field at one end of it, far from the qubits. The generation of realistic solitons has been simulated. When a suitable soliton passes by, the coupled qubit undergoes nontrivial operations, even in the presence of moderate thermal noise. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free