Sagnac-type entangled photon source using only conventional polarization\n optics
Bibliographic record
Abstract
We designed and implemented a novel combination of a Sagnac-interferometer\nwith a Mach-Zehnder interferometer for a source of polarization-entangled\nphotons. The new versatile configuration does not require multi-wavelength\npolarization optics, yet it performs with a good polarization quality and\nphase-stability over a wide wavelength range. We demonstrate the interferometer\nusing only standard commercial optics to experimentally realize the pulsed\ngeneration of polarization-entangled photon-pairs at wavelengths of 764nm and\n1221nm via type-I spontaneous four-wave mixing in a polarization-maintaining\nfiber. Polarization entanglement was verified by a polarization-correlation\nmeasurement with a visibility of 95.5% from raw coincidence counts and the\nviolation of the Clauser-Horne-Shimony-Holt (CHSH) inequality with\n$S=2.70\\pm0.04$. The long-term phase-stability was characterized by an Allan\ndeviation of 8$^\\circ$ over an integration time of about 1 hour with no active\nphase-stabilization.\n
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".