Spin resonance under topological driving fields

We study the dynamics of a localized spin-1/2 driven by a time-periodic magnetic field that undergoes a topological transition. Despite the strongly non-adiabatic effects dominating the spin dynamics, we find that the field's topology appears clearly imprinted in the Floquet spin states through...

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Bibliographic Details
Published inNew journal of physics Vol. 19; no. 6; pp. 63010 - 63018
Main Authors Reynoso, A A, Baltanás, J P, Saarikoski, H, Vázquez-Lozano, J E, Nitta, J, Frustaglia, D
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2017
Subjects
Floquet physics
geometric phases
magnetic resonance
NMR
Nuclear magnetic resonance
Physics
Qubits (quantum computing)
Spin dynamics
Spin resonance
strong driving
topological transitions
Topology
two-level systems
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Summary:We study the dynamics of a localized spin-1/2 driven by a time-periodic magnetic field that undergoes a topological transition. Despite the strongly non-adiabatic effects dominating the spin dynamics, we find that the field's topology appears clearly imprinted in the Floquet spin states through an effective Berry phase emerging in the quasienergy. This has remarkable consequences on the spin resonance condition suggesting a whole new class of experiments to spot topological transitions in the dynamics of spins and other two-level systems, from nuclear magnetic resonance to strongly-driven superconducting qubits.
Bibliography:NJP-106477
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/aa723a