Spin guides and spin splitters: Waveguide analogies in one-dimensional spin chains

Makin, M, Cole, J, Hill, C and Greentree, A 2012, 'Spin guides and spin splitters: Waveguide analogies in one-dimensional spin chains', Physical Review Letters, vol. 108, no. 1, pp. 1-5.

Document type: Journal Article
Collection: Journal Articles

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Title Spin guides and spin splitters: Waveguide analogies in one-dimensional spin chains
Author(s) Makin, M
Cole, J
Hill, C
Greentree, A
Year 2012
Journal name Physical Review Letters
Volume number 108
Issue number 1
Start page 1
End page 5
Total pages 5
Publisher American Physical Society
Abstract Here we show a mapping between waveguide theory and spin-chain transport, opening an alternative approach to solid-state quantum information transport. By applying temporally varying control profiles to a spin chain, we design a virtual waveguide or "spin guide" to conduct spin excitations along defined space-time trajectories of the chain. We show that the concepts of confinement, adiabatic bend loss, and beam splitting can be mapped from optical waveguide theory to spin guides, and hence to "spin splitters." Importantly, the spatial scale of applied control pulses is required to be large compared to the interspin spacing, thereby allowing the design of scalable control architectures.
Subject Quantum Information, Computation and Communication
Electronic and Magnetic Properties of Condensed Matter; Superconductivity
Photonics, Optoelectronics and Optical Communications
Keyword(s) Adiabatic bend
Alternative approach
Beam splitting
Control architecture
Control profiles
Control pulse
Optical waveguide theory
Quantum Information
Space-time trajectory
Spatial scale
Spin chains
Spin excitation
Spin splitter
Waveguide theory
DOI - identifier 10.1103/PhysRevLett.108.017207
Copyright notice © 2012 American Physical Society
ISSN 0031-9007
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Created: Fri, 18 May 2012, 09:12:00 EST by Catalyst Administrator
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