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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2510.21235 |
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| _version_ | 1866909867431690240 |
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| author | Rizza, Carlo Contestabile, Alessandra Vincenti, Maria Antonietta Castaldi, Giuseppe Ferrera, Marcello Stroppa, Alessandro Scalora, Michael Galdi, Vincenzo |
| author_facet | Rizza, Carlo Contestabile, Alessandra Vincenti, Maria Antonietta Castaldi, Giuseppe Ferrera, Marcello Stroppa, Alessandro Scalora, Michael Galdi, Vincenzo |
| contents | Electromagnetic temporal boundaries, emerging when the constitutive parameters of a medium undergo abrupt temporal variations, have garnered significant interest for their role in facilitating unconventional wave phenomena and enabling sophisticated field manipulations. A key manifestation is temporal reflection in an unbounded spatial domain, where a sudden temporal discontinuity induces phase-conjugated backward waves alongside anomalous spin conversion. This study explores distinctive spin-conversion dynamics at a time-dependent spatial interface governed by Lorentz-type dispersion, in which the plasma frequency undergoes rapid modulation over time. The interaction of a circularly polarized wave with a space-time interface excites electromagnetic signals at the system's natural resonance, allowing precise control over polarization states. The scattered field stems from the combined influence of temporal and spatial boundaries, yielding a superposition of the original incident wave's polarization and its phase-conjugated counterpart. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_21235 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optical Spin Effects Induced by Phase Conjugation at a Space-Time Interface Rizza, Carlo Contestabile, Alessandra Vincenti, Maria Antonietta Castaldi, Giuseppe Ferrera, Marcello Stroppa, Alessandro Scalora, Michael Galdi, Vincenzo Optics Electromagnetic temporal boundaries, emerging when the constitutive parameters of a medium undergo abrupt temporal variations, have garnered significant interest for their role in facilitating unconventional wave phenomena and enabling sophisticated field manipulations. A key manifestation is temporal reflection in an unbounded spatial domain, where a sudden temporal discontinuity induces phase-conjugated backward waves alongside anomalous spin conversion. This study explores distinctive spin-conversion dynamics at a time-dependent spatial interface governed by Lorentz-type dispersion, in which the plasma frequency undergoes rapid modulation over time. The interaction of a circularly polarized wave with a space-time interface excites electromagnetic signals at the system's natural resonance, allowing precise control over polarization states. The scattered field stems from the combined influence of temporal and spatial boundaries, yielding a superposition of the original incident wave's polarization and its phase-conjugated counterpart. |
| title | Optical Spin Effects Induced by Phase Conjugation at a Space-Time Interface |
| topic | Optics |
| url | https://arxiv.org/abs/2510.21235 |