Superluminal Correlations in Ensembles of Optical Phase Singularities
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arXiv
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| Autores principales: | , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| author | Bucher, Tomer Gorlach, Alexey Niedermayr, Arthur Yan, Qinghui Nahari, Harel Wang, Kangpeng Ruimy, Ron Adiv, Yuval Yannai, Michael Abudi, Tom Lenkiewicz Janzen, Eli Spaegele, Christina Roques-Carmes, Charles Edgar, James Koppens, Frank Vanacore, Giovanni Sheinfux, Hanan Herzig Tsesses, Shai Kaminer, Ido |
| author_facet | Bucher, Tomer Gorlach, Alexey Niedermayr, Arthur Yan, Qinghui Nahari, Harel Wang, Kangpeng Ruimy, Ron Adiv, Yuval Yannai, Michael Abudi, Tom Lenkiewicz Janzen, Eli Spaegele, Christina Roques-Carmes, Charles Edgar, James Koppens, Frank Vanacore, Giovanni Sheinfux, Hanan Herzig Tsesses, Shai Kaminer, Ido |
| contents | Phase singularities are universal features found across diverse wave systems. Their ensembles exhibit distance correlations governing exotic material phases. However, the full correlations in phase-space have remained unexplored and experimentally inaccessible. Here, we directly measure the ultrafast dynamics of optical singularity ensembles, capturing their phase-space correlations. Our observations reveal that phase singularities exhibit acceleration to unbounded velocities before annihilation, indicated by measurements of velocities exceeding the speed of light. These superluminal velocities are paradoxically amplified by the slow group velocity of hyperbolic phonon polaritons in our material platform, hexagonal boron nitride membranes. We demonstrate these phenomena using combined hardware and algorithmic advances in ultrafast electron microscopy, achieving spatial and temporal resolutions each an order of magnitude below the polaritonic wavelength and cycle period. Our findings enable probing topological defect dynamics at previously unattainable timescales, deepening our understanding of phase-singularity universality and suggesting phenomena of ultrafast information flow in polaritonic media. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_17675 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Superluminal Correlations in Ensembles of Optical Phase Singularities Bucher, Tomer Gorlach, Alexey Niedermayr, Arthur Yan, Qinghui Nahari, Harel Wang, Kangpeng Ruimy, Ron Adiv, Yuval Yannai, Michael Abudi, Tom Lenkiewicz Janzen, Eli Spaegele, Christina Roques-Carmes, Charles Edgar, James Koppens, Frank Vanacore, Giovanni Sheinfux, Hanan Herzig Tsesses, Shai Kaminer, Ido Optics Phase singularities are universal features found across diverse wave systems. Their ensembles exhibit distance correlations governing exotic material phases. However, the full correlations in phase-space have remained unexplored and experimentally inaccessible. Here, we directly measure the ultrafast dynamics of optical singularity ensembles, capturing their phase-space correlations. Our observations reveal that phase singularities exhibit acceleration to unbounded velocities before annihilation, indicated by measurements of velocities exceeding the speed of light. These superluminal velocities are paradoxically amplified by the slow group velocity of hyperbolic phonon polaritons in our material platform, hexagonal boron nitride membranes. We demonstrate these phenomena using combined hardware and algorithmic advances in ultrafast electron microscopy, achieving spatial and temporal resolutions each an order of magnitude below the polaritonic wavelength and cycle period. Our findings enable probing topological defect dynamics at previously unattainable timescales, deepening our understanding of phase-singularity universality and suggesting phenomena of ultrafast information flow in polaritonic media. |
| title | Superluminal Correlations in Ensembles of Optical Phase Singularities |
| topic | Optics |
| url | https://arxiv.org/abs/2509.17675 |