Optical Vortex Core Switching in Spinor Polariton Condensates
M. Pukrop, S. Schumacher, X. Ma, ArXiv:1907.10974 (2019).
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Abstract
Vortices are topological objects carrying quantized orbital angular momentum,
also known as topological charge, and have been widely studied in many physical
systems for their applicability in information storage and processing. Here we
focus on vortices in semiconductor microcavity polariton condensates. In
systems with spin degree of freedom the elementary excitations are so called
half-vortices. A half-vortex carries a quantum circulation only in one of the
two spin components. It has lower energy in comparison with a full-vortex and,
importantly, has a circularly polarized density peak in the vortex core region,
while elsewhere the condensate is linearly polarized. We demonstrate the
spontaneous formation of localized half-vortices in spinor polariton
condensates, non-resonantly excited by a linearly polarized ring pump. The
pseudospin structure of the condensate includes a TE-TM splitting leading to
effective spin-orbit coupling, resulting in solutions with broken cylindrical
symmetry. The cross-interaction between different spin components provides an
efficient method to realize optical vortex core switching between left- and
right-circularly polarized states. This switching can be easily detected by
measuring the polarization resolved intensity in the vortex core region and it
can also be applied to higher order half-vortex states.
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arXiv:1907.10974
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Cite this
Pukrop M, Schumacher S, Ma X. Optical Vortex Core Switching in Spinor Polariton Condensates. arXiv:190710974. 2019.
Pukrop, M., Schumacher, S., & Ma, X. (2019). Optical Vortex Core Switching in Spinor Polariton Condensates. ArXiv:1907.10974.
@article{Pukrop_Schumacher_Ma_2019, title={Optical Vortex Core Switching in Spinor Polariton Condensates}, journal={arXiv:1907.10974}, author={Pukrop, Matthias and Schumacher, Stefan and Ma, Xuekai}, year={2019} }
Pukrop, Matthias, Stefan Schumacher, and Xuekai Ma. “Optical Vortex Core Switching in Spinor Polariton Condensates.” ArXiv:1907.10974, 2019.
M. Pukrop, S. Schumacher, and X. Ma, “Optical Vortex Core Switching in Spinor Polariton Condensates,” arXiv:1907.10974. 2019.
Pukrop, Matthias, et al. “Optical Vortex Core Switching in Spinor Polariton Condensates.” ArXiv:1907.10974, 2019.