Squeezed Dirac and topological magnons in a bosonic honeycomb optical lattice

Quantum information storage using charge-neutral quasiparticles is expected to play a crucial role in the future of quantum computers. In this regard, magnons or collective spin-wave excitations in solid-state materials are promising candidates in the future of quantum computing. Here, we study the...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2017-11, Vol.29 (45), p.455802-455802
Main Authors: Owerre, S A, Nsofini, J
Format: Article
Language:English
Subjects:
correlation functions
Dirac and topological magnons
optical lattice
quantum squeezing
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Summary:Quantum information storage using charge-neutral quasiparticles is expected to play a crucial role in the future of quantum computers. In this regard, magnons or collective spin-wave excitations in solid-state materials are promising candidates in the future of quantum computing. Here, we study the quantum squeezing of Dirac and topological magnons in a bosonic honeycomb optical lattice with spin-orbit interaction by utilizing the mapping to quantum spin-1/2 XYZ Heisenberg model on the honeycomb lattice with discrete Z2 symmetry and a Dzyaloshinskii-Moriya interaction. We show that the squeezed magnons can be controlled by the Z2 anisotropy and demonstrate how the noise in the system is periodically modified in the ferromagnetic and antiferromagnetic phases of the model. Our results also apply to solid-state honeycomb (anti)ferromagnetic insulators.
ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/aa8dcb