Pytket-quantinuum Job Submission Deprecation
Quantinuum is deprecating the job submission API in pytket-quantinuum and is slated to be removed by November 30th, 2025. This impacts users that consume pytket-quantinuum to submit jobs to Quantinuum Systems, including cloud emulators (e.g., H1-1E). Pytket-quantinuum will still exist as a client-side tool for local compilation and local emulation (suffixed with “LE”).
All changes and updates to user workflows are specified below.
Changes to User Workflows
For detailed information on deprecated methods, please consult the pytket-quantinuum release notes (Changelog - pytket-quantinuum API documentation).
| Capability | Change |
|---|---|
| Job submission (Hardware) | Deprecated methods will be removed on November 30th, 2025. |
| Recommendation is to use Nexus for job submission. See workflow here (Getting Started - Quantinuum Nexus). | |
| Job Submission (Emulator) | Cloud emulators (suffixed with E) only accessible with Nexus from November 30th, 2025, in addition to Nexus-hosted emulators. For access, please review guidance above. |
| Pytket-quantinuum only provides support for local emulators from November 30th, 2025. Please see emulator details here. | |
| Circuit compilation | No change. |
| Leakage Detection Gadget | No change. |
How to access Quantinuum Hardware and Cloud Emulators?
Users can access hardware and cloud emulators using Nexus (Getting Started - Quantinuum Nexus). By migrating to Nexus, users can additionally access Nexus-hosted emulator (Quantinuum Emulators - Quantinuum Systems).
What happens to my jobs submitted using pytket-quantinuum?
All users’ jobs will be retained on Quantinuum servers for 40 days after submission. See data retention policy and guidance here (Frequently Asked Questions - Quantinuum Nexus).
Next Steps?
Users should prepare to migrate to Nexus by reviewing the Nexus user guide and trainings. For any questions and concerns, please contact QCSupport@quantinuum.com.