Observation of compact localized states in synthetic Floquet-Lieb topological photonic lattices
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Abstract Flat bands are unique quantum states in translationally-invariant lattices that are characterized by dispersionless energy bands and compact localized Wannier functions. In static, tight-binding systems, topologically nontrivial and gapped, perfectly flat bands require infinite hopping range, making these systems difficult to realize. By introducing periodic driving into the system, it is possible to achieve flat bands embedded in topologically nontrivial bandgaps while requiring only nearest neighbor couplings. Here we realize perfectly flat bands in a Floquet-Lieb microring lattice in which the periodic circulation of light around the rings emulates a synthetic time-like dimension. Near-infrared imaging of the scattered light allows direct observation of the compact localized state, which confirms the cyclic trajectory of the Wannier function of the flat band. In addition to a symmetry-protected flat band, the dispersive bands of the lattice can also be flattened by tuning the geometric phase of the cyclically-evolving Wannier function, leading to light localization effect which may be called Aharonov-Anandan caging. The Aharonov-Anandan phase can be directly measured from the frequency displacement of the flat-band resonance. These results suggest that flat band modes in lattices with periodic synthetic dimension could provide a versatile platform for studying novel phenomena in strongly correlated quantum systems.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 |
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