Ultrafast space-time optical merons in momentum-energy space
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915199807651840 |
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| author | Yessenov, Murat Dorrah, Ahmed H. Guo, Cheng Hall, Layton A. Park, Joon-Suh Free, Justin Johnson, Eric G. Capasso, Federico Fan, Shanhui Abouraddy, Ayman F. |
| author_facet | Yessenov, Murat Dorrah, Ahmed H. Guo, Cheng Hall, Layton A. Park, Joon-Suh Free, Justin Johnson, Eric G. Capasso, Federico Fan, Shanhui Abouraddy, Ayman F. |
| contents | Skyrmions, topologically non-trivial localized spin structures, are fertile ground for exploring emergent phenomena in condensed matter physics and next-generation magnetic-memory technologies. Although magnetics and optics readily lend themselves to two-dimensional realizations of spin texture, only recently have breakthroughs brought forth three-dimensional (3D) magnetic skyrmions, whereas their optical counterparts have eluded observation to date because their realization requires precise control over the spatiotemporal spectrum. Here, we demonstrate the first 3D-localized optical skyrmionic structures with a non-trivial topological spin profile by imprinting meron spin texture on open and closed spectral surfaces in the momentum-energy space of an ultrafast optical wave packet. Precise control over the spatiotemporal spin texture of light - a key requisite for synthesizing 3D optical merons - is the product of synergy between novel methodologies in the modulation of light jointly in space and time, digital holography, and large-area birefringent metasurfaces. Our work advances the fields of spin optics and topological photonics and may inspire new developments in imaging, metrology, optical communications, and quantum technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_11980 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ultrafast space-time optical merons in momentum-energy space Yessenov, Murat Dorrah, Ahmed H. Guo, Cheng Hall, Layton A. Park, Joon-Suh Free, Justin Johnson, Eric G. Capasso, Federico Fan, Shanhui Abouraddy, Ayman F. Optics Skyrmions, topologically non-trivial localized spin structures, are fertile ground for exploring emergent phenomena in condensed matter physics and next-generation magnetic-memory technologies. Although magnetics and optics readily lend themselves to two-dimensional realizations of spin texture, only recently have breakthroughs brought forth three-dimensional (3D) magnetic skyrmions, whereas their optical counterparts have eluded observation to date because their realization requires precise control over the spatiotemporal spectrum. Here, we demonstrate the first 3D-localized optical skyrmionic structures with a non-trivial topological spin profile by imprinting meron spin texture on open and closed spectral surfaces in the momentum-energy space of an ultrafast optical wave packet. Precise control over the spatiotemporal spin texture of light - a key requisite for synthesizing 3D optical merons - is the product of synergy between novel methodologies in the modulation of light jointly in space and time, digital holography, and large-area birefringent metasurfaces. Our work advances the fields of spin optics and topological photonics and may inspire new developments in imaging, metrology, optical communications, and quantum technologies. |
| title | Ultrafast space-time optical merons in momentum-energy space |
| topic | Optics |
| url | https://arxiv.org/abs/2503.11980 |