Squeezed Dirac and Topological Magnons in a Bosonic Honeycomb Optical Lattice
Abstract
Quantum information storage using charge-neutral quasiparticles are 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- XYZ Heisenberg model on the honeycomb lattice with discrete Z symmetry and a Dzyaloshinskii-Moriya interaction. We show that the squeezed magnons can be controlled by the Z 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.
Keywords
Cite
@article{arxiv.1706.04974,
title = {Squeezed Dirac and Topological Magnons in a Bosonic Honeycomb Optical Lattice},
author = {S. A. Owerre and J. Nsofini},
journal= {arXiv preprint arXiv:1706.04974},
year = {2017}
}
Comments
9 pages, 9 figures