Waveguide-QED in a nanowire quantum dot system
Bibliographic record
Abstract
A single two-level system coupled strongly to a one-dimensional optical waveguide mode has been a challenge in realizing a true waveguide-QED system. Such a system can be realized with a single quantum dot (QD) grown on the axis of a nanowire (NW) with a single optical waveguide mode. In this study, we investigate light injection into a tapered InP NW with an InAsP QD using k-space extinction microscopy. Numerical simulations estimate that > 80% extinction of reflected laser light under mode matching conditions corresponds to ≈ 90% in-coupling of the input light into the fundamental waveguide mode of the NW. We experimentally verify this claim of near-ideal mode matching and reflect light from the quantum dot under the Heitler regime. We observe that the reflected light has the coherence of the laser with strong antibunching (g2(0) < 0.1). Mode-matching the input laser and the reflected signal removes the requirement for any additional filtering techniques that were necessary in previous works to supress the laser light that does not interact with the QD. Our work demonstrates a true realization of a single two-level system coupled to a one-dimensional electromagnetic mode.
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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 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".