Observation of interband Berry phase in laser driven crystals
Why this work is in the frame
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Bibliographic record
Abstract
Abstract Ever since its discovery, the notion of Berry phase has permeated through all branches of physics, being at the heart of a large variety of quantum phenomena. However, so far all its realizations were based on a continuous evolution of the quantum state, following a cyclic path. Here, we introduce and demonstrate a conceptually new manifestation of the Berry phase in light driven crystals, where the electronic wavefunction accumulates a geometric phase during discrete evolution between different bands, while preserving the coherence of the process. We experimentally demonstrate this phase by using a strong laser field to engineer an internal interferometer, induced during less than one cycle of the driving field, which maps the phase onto the emission of high order harmonics. Our work opens a new branch in the study of geometric phases, leading to a variety of new observations in light driven topological phenomena and attosecond solid state physics.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
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