UNIVERSITY OF CALGARY Cavity-Enhanced Waveguide Quantum Memory
Bibliographic record
Abstract
An optical quantum memory is a device capable of storing the quantum state of a photon and subsequently recalling it faithfully. The efficiency of a memory, which is the focus of this work, is defined as the probability of successful storage and subsequent retrieval of the information. This thesis reports an experiment performed towards making a high efficiency quantum memory by using a cavity enhanced Atomic Frequency Comb (AFC) protocol, implemented in a waveguide in a rare-earth ion doped crystal. Our measurements identified the obstacles that have to be overcome to achieve that aim. Exploiting the cavity dynamics, we managed to estimate the essential parameters in implementation of the scheme. The investigations give a valuable insight into the protocol and the ways to exploit its full potential. Furthermore, the analysis of the experimental observations leads to proposals that may serve as alternatives to current ways of implementing the protocol. i Dedicated to the loving memory of my grandmother, who passed away a few days before I finished this thesis.
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How this classification was reachedexpand
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 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| 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 teacher head, 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".