Temporal chirp, temporal lensing, and temporal routing via space-time interfaces Article Swipe

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Víctor Pacheco‐Peña , Mathias Fink , Nader Engheta ·

YOU? · · 2025 · Open Access · · DOI: https://doi.org/10.1103/physrevb.111.l100306

A time interface (a rapid change of the constitutive parameters of a material in time), applied within an unbounded medium where a wave travels, can enable frequency conversion and is considered the temporal analog of a spatial interface between two materials. Here, we study light-matter interactions in four dimensions, 4D (space, and time, t), by exploring the implications of applying time interfaces, not to the entire space where a wave travels, but to certain regions of space in order to create spatial interfaces in time. Different configurations such as induced perpendicular, parallel, and oblique spatial interfaces via a temporal interface are discussed. It is shown how such four-dimensional combination of temporal and spatial interfaces can enable interesting features such as the 4D and and of electromagnetic waves. Such exotic possibilities may provide new ways to manipulate light-matter interactions via a combination of temporal and spatial interfaces.

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Chirp Computer science Spacetime Space time Physics Optics Engineering Chemical engineering Quantum mechanics Laser

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Type: article
Language: en
Landing Page: https://doi.org/10.1103/physrevb.111.l100306
PDF: http://link.aps.org/pdf/10.1103/PhysRevB.111.L100306
OA Status: hybrid
Cited By: 7
References: 43
Related Works: 10
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DOI: https://doi.org/10.1103/physrevb.111.l100306

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Title: Temporal chirp, temporal lensing, and temporal routing via space-time interfaces

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Language: en

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Publication year: 2025

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Publication date: 2025-03-31

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Authors: Víctor Pacheco‐Peña, Mathias Fink, Nader Engheta

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Landing page: https://doi.org/10.1103/physrevb.111.l100306

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Concepts: Chirp, Computer science, Spacetime, Space time, Physics, Optics, Engineering, Chemical engineering, Quantum mechanics, Laser

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Cited by: 7

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Citations by year (recent): 2025: 7

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citation_normalized_percentile.value	0.99405371
citation_normalized_percentile.is_in_top_1_percent	True
citation_normalized_percentile.is_in_top_10_percent	True