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Thank you for contributing to QuantumToolbox.jl! Please make sure you have finished the following tasks before opening the PR.

  • Please read Contributing to Quantum Toolbox in Julia.
  • Any code changes were done in a way that does not break public API.
  • Appropriate tests were added and tested locally by running: make test.
  • Any code changes should be julia formatted by running: make format.
  • All documents (in docs/ folder) related to code changes were updated and able to build locally by running: make docs.
  • (If necessary) the CHANGELOG.md should be updated (regarding to the code changes) and built by running: make changelog.

Request for a review after you have completed all the tasks. If you have not finished them all, you can also open a Draft Pull Request to let the others know this on-going work.

Description

I have added propagators.jl which includes a callable propagator structure that caches previous results for future use. If no c_ops are supplied during the initialization, then the propagator initializes similar to sesolve, if there are c_ops, then it initializes similar to mesolves and solves for the "super-propagator".

Related issues or PRs

Related to issue #521.

Additional context

I have not been able to get the documents to be built at all. for both v0.34.0, v0.35.0 and my version. I just randomly gets killed with no error message.

@ytdHuang
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ytdHuang commented Nov 16, 2025

@Gavin-Rockwood

Hi, I just noticed that you closed this PR. Do you need any help ?

I didn't noticed your additional context before, now I see it.

The reason is because you didn't change the status of PR from draft to ready. That's why the CI pipelines didn't trigger.

If you want, we can also schedule an online meeting to have further discussions about this project.

@Gavin-Rockwood
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@ytdHuang

Hi, I actually closed it because I have been making some slight changes to a local version of this code (including fixing a few bugs) and haven't gotten around to cleaning it up and putting it on github!

I also saw that there is now sesolve_map (and mesolve_map) so I wasn't sure what the roadmap was for adding generic operator support to sesolve and mesolve like there is in Qutip (in Qutip I believe I can put the identity matrix into sesolve and it just works). If that was on the immediate roadmap, then I think it makes the solution I used a bit redundant. Maybe a better first step would be to add that functionality to sesolve?

@ytdHuang
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@albertomercurio @Gavin-Rockwood

Would you like to join our Zulip Chat ?

Should be easier to discuss about the next step there.

@Gavin-Rockwood
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Yeah! That might be good. Is it through the normal Julia Zulip?

@ytdHuang
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ytdHuang commented Nov 17, 2025

We have our own Zulip chat server: https://quantumtoolbox-jl.zulipchat.com/#narrow/stream/General

If you login, then you will see other channels

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2 participants