SciPost Submission Page
QDarts: A Quantum Dot Array Transition Simulator for finding charge transitions in the presence of finite tunnel couplings, non-constant charging energies and sensor dots
by Jan A. Krzywda, Weikun Liu, Evert van Nieuwenburg, Oswin Krause
Submission summary
| Authors (as registered SciPost users): | Jan Krzywda |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2404.02064v3 (pdf) |
| Code repository: | https://github.com/condensedAI/QDarts |
| Date accepted: | 2024-10-08 |
| Date submitted: | 2024-10-01 05:38 |
| Submitted by: | Krzywda, Jan |
| Submitted to: | SciPost Physics Codebases |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Computational |
Abstract
We present QDarts, an efficient simulator for realistic charge stability diagrams of quantum dot array (QDA) devices in equilibrium states. It allows for pinpointing the location of concrete charge states and their transitions in a high-dimensional voltage space (via arbitrary two-dimensional cuts through it), and includes effects of finite tunnel coupling, non-constant charging energy and a simulation of noisy sensor dots. These features enable close matching of various experimental results in the literature, and the package hence provides a flexible tool for testing QDA experiments, as well as opening the avenue for developing new methods of device tuning.
Author comments upon resubmission
List of changes
Most of the changes address the reviewers' suggestions (see response). The key changes are as follows:
Manuscript:
- A more detailed comparison between QDarts and other similar packages.
- Added colorbars to indicate parameters in the figures.
- Explanation of the odd-even parity effect for tunnel coupling.
Code:
- Implementation of the odd-even parity effect for tunnel coupling.
- Measurement of quantum capacitance via in-situ reflectometry (new example notebook).
- A new example notebook for the low-level interface.
- Updated documentation, including an improved installation guide and requirements.
- Overall improvements to the code structure and quality.
Current status:
Editorial decision:
For Journal SciPost Physics Codebases: Publish
(status: Editorial decision fixed and (if required) accepted by authors)