Dual Transverse Vortex-Spin-Momentum Locking in Rotating-Wave Structured Light
Abstract
We theoretically investigate the transverse Poynting momentum and transverse spin angular momentum in circularly polarized rotating-wave structured light, and reveal a pair of dual transverse vortex-spin-momentum locking. The transverse Poynting momentum exhibits a ℤ2 × ℤ2 symmetric locking structure, being controlled independently by either the polarization or vortex handedness, yet invariant under their simultaneous reversal. Meanwhile, the transverse spin angular momentum is independent of the polarization but endowed with a crucial vortex-dependence inheriting such vortex-dependence from the Poynting momentum via curl operation. This finding expands the understanding of transverse optical linear and angular momenta in structured light and opens a new paradigm for vortex-spin-controlled optical manipulation.
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BibTeX
@misc{wang2026dual,
title = {{Dual Transverse Vortex-Spin-Momentum Locking in Rotating-Wave Structured Light}},
author = {Zhen-Lai Wang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.28242},
eprint = {2610.28242},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.28242},
}
RIS
TY - UNPB
TI - Dual Transverse Vortex-Spin-Momentum Locking in Rotating-Wave Structured Light
AU - Zhen-Lai Wang
PY - 2026
DA - 2026/10/21
PB - arXiv
DO - 10.48550/arxiv.2610.28242
UR - https://arxiv.org/abs/2610.28242
AB - We theoretically investigate the transverse Poynting momentum and transverse spin angular momentum in circularly polarized rotating-wave structured light, and reveal a pair of dual transverse vortex-spin-momentum locking. The transverse Poynting momentum exhibits a ℤ_2 × ℤ_2 symmetric locking structure, being controlled independently by either the polarization or vortex handedness, yet invariant under their simultaneous reversal. Meanwhile, the transverse spin angular momentum is independent of the polarization but endowed with a crucial vortex-dependence inheriting such vortex-dependence from the Poynting momentum via curl operation. This finding expands the understanding of transverse optical linear and angular momenta in structured light and opens a new paradigm for vortex-spin-controlled optical manipulation.
ER -