Emulating time refraction at photonic time interfaces via smooth temporal transitions
Why this work is in the frame
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Bibliographic record
Abstract
The introduction of time as a new degree of freedom to control wave-matter interactions has opened alternative avenues to fully control wave propagation in four dimensions (,,,). Time interfaces (rapid changes of the constitutive relationships of the medium where a wave propagates) have recently become popular, as they are the temporal analogue of spatial interfaces. While recent groundbreaking experimental work has demonstrated time interfaces from water waves, microwaves, and the optical regime, rapidly changing, for instance, the permittivity of the medium requires carefully engineered structures. Here, we study the possibility of implementing smooth temporal transitions of the permittivity and permeability of the medium (while considering time-independent impedance) to mimic the response of the time-refracted waves produced by photonic time interfaces. It is shown that indeed, as long as the signal is inside the structure during the modulation time, there are some values of rising or falling time of the smooth modulation that enable a full approximate emulation of time refraction. These results may open further avenues to explore by relaxing the speed at which the time modulation should be introduced when designing four-dimensional media.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it