add the floquet solver test

[bibekbh1]

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Description

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Related issues or PRs

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Additional context

[albertomercurio]

Hi @bibekbh1,

Could you explain what you are doing in this PR?

[bibekbh1]

Hi Alberto, I apologize for that pull request, it was by mistake when we were setting up our in-house development branch. We (Dominic and I, Dominic in cc) were planning on reaching out to you anyways, so while I have you here: we are developing a Floquet solver with a similar API as the Floquet Basis in qutip 5.2.3. We are making this branch for our own in-house needs but we are following the coding standards of the larger QuantumToolbox.jl library, including API, testing, and documentation practices. We would like to know if initiating a pull request for the more refined floquet solver would be of interest to the QuantumToolbox.jl team. Right now, we have only implemented unitary dynamics. In the near future, we intend to add non-unitary dynamics. Best regards, Dominic and Bibek

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On Sat, Jan 31, 2026 at 5:59 AM Alberto Mercurio ***@***.***> wrote: *albertomercurio* left a comment (qutip/QuantumToolbox.jl#646) <#646 (comment)> Hi @bibekbh1 <https://github.com/bibekbh1>, Could you explain what you are doing in this PR? — Reply to this email directly, view it on GitHub <#646 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A5OMJ73QXM3DZD32CEU74C34JSYKLAVCNFSM6AAAAACRTM3ND6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTQMRYGU3TOMBTGU> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[ytdHuang]

Hi @bibekbh1,

Contributions are always welcome ! Please remember to read Contributing to Quantum Toolbox in Julia first.

However, it seems that this PR is still under development. Can you change this PR to draft PR first ? Otherwise, it keeps trigger the CI pipelines.

You can change it back when you think it is ready for us to review.

[albertomercurio]

Hi @bibekbh1,

Thank you for the explanation.

I know that @Gavin-Rockwood is working on some related stuff. Especially on the propagator that will be then used for Floquet solvers.

Perhaps it is better to coordinate in order to avoid overlaps.

There is also this issue open #521

[bibekbh1]

Hi Alberto and Yi-Te, Thank you very much for your email. I have changed the PR to draft PR. We will get in contact with @Gavin-Rockwood <https://github.com/Gavin-Rockwood> and let you know once the Floquet solver is ready for review. Best regards, Bibek and Dominic

…

On Wed, Feb 4, 2026 at 2:54 AM Alberto Mercurio ***@***.***> wrote: *albertomercurio* left a comment (qutip/QuantumToolbox.jl#646) <#646 (comment)> Hi @bibekbh1 <https://github.com/bibekbh1>, Thank you for the explanation. I know that @Gavin-Rockwood <https://github.com/Gavin-Rockwood> is working on some related stuff. Especially on the propagator that will be then used for Floquet solvers. Perhaps it is better to coordinate in order to avoid overlaps. — Reply to this email directly, view it on GitHub <#646 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A5OMJ75TG5SWJ5UZMFXJ5WL4KHFWHAVCNFSM6AAAAACRTM3ND6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTQNBWG4ZDOMZXGM> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[Gavin-Rockwood]

Hi @bibekbh1, yes! I have been working in that direction. Currently I am putting together a propagator structure similar to qutip, however I have been a bit busy the past couple of weeks with my day-to-day postdoc stuff. I am planning on jumping back into this in the next day or two and hopefully hammer it out. I'm down to chat about floquet implementations and the like!