v0.42.0

[natestemen]

(Full Changelog)

Highlights

🎊 Thanks for a great 2024! Our end of the year recap should be out soon. Subscribe here to get the newsletter in your mailbox.

🚀 Many thanks to first time contributors @gluonhiggs, @JMuff22, @sanketsharma and @Shivansh20128!

• @gluonhiggs added support for some additional Qiskit gates through using gate decomposition for gates that are unavailable
  in Cirq. A similar idea was applied to gates not recognized by QASM.
• @Shivansh20128 added a new page in the documentation for benchmarking circuits.
• @JMuff22 and @sanketsharma corrected typos in the documentation.

💡 A new error-mitigation technique is on its way. Thanks to @Misty-W for the Probabilistic Error Amplification RFC!

🎏 Modular functions are now available for both PEC and DDD, courtesy of @natestemen and @bdg221! These functions allow a user to generate intermediary circuits and combine the results in a two step process. E.g. in PEC:

from mitiq import pec

circuits = pec.intermediary_sampled_circuits(circuit, representations)

sampled_circuit_results = ...  # execute the circuits on a simulator/hardware/toothbrush/etc

pec_estimate = pec.combine_results(sampled_circuit_results, ...)

✨ Enhancements

• Fix converting Rxx and similar Qiskit gates (Fix converting Rxx and similar Qiskit gates  #2579) [@gluonhiggs]
• Handle unsupported gates (Resolve issue 1073 handle unsupported gates #2585) [@gluonhiggs]
• RFC for Probabilistic Error Amplification technique (Review RFC for Probabilistic Error Amplification technique #2550) [@Misty-W]
• Address executor and observable incompatibility (Address executor and observable incompatibility #2514) [@bdg221]
• Modularize PEC functionality (Modularize PEC functionality #2604) [@natestemen]
• Modularize DDD functionality (Modularize DDD functionality #2610) [@bdg221]

🧑🏽‍💻 Developer Improvements

• Fix flaky ZNE factory + observable test (Fix flaky ZNE factory + observable test #2602) [@natestemen]
• Ensure further LRE compatibility with non-Cirq circuits (Generalize extra LRE functions to work with all QPROGRAMs #2599) [@natestemen]
• Throw Erorr on Multiple Measurements per Qubit with Observables (Throw Erorr on Multiple Measurements per Qubit with Observables #2593) [@bdg221]

📓 Documentation

• Update Calibration run docstring for API-doc (Update Calibration run docstring for API-doc #2516) [@bdg221]
• Add benchmarking circuits to user guide (2274 Benchmark User Guide #2566) [@Shivansh20128]
• Correct run-on sentences in the API-doc for CDR function docstrings (Correcting run-on sentences in API-doc #2589) [@Shivansh20128]
• Quick fix: Fix typo and headings in classical shadows tutorial (Quick fix: Fix typo and headings in classical shadows tutorial #2574) [@JMuff22]
• Update executor and observable docs (Update executor and observable docs #2594) [@bdg221]
• Add log param to calibration guide (Add log param to calibration guide #2568) [@bdg221]
• Fix constant value in ZNE docs (Fix constant value in ZNE docs #2591) [@cosenal]
• Fixed typo in documentation (#Fixed typo in documentation #2611) [@sanketsharma]

📦 Dependency Updates

• Update qiskit requirement from ~=1.2.4 to ~=1.3.1 (Update qiskit requirement from ~=1.2.4 to ~=1.3.1 #2603) [@dependabot, @cosenal]
• Update qibo requirement from ~=0.2.7 to ~=0.2.13 (Update qibo requirement from ~=0.2.7 to ~=0.2.13 #2559) [@dependabot]
• Bump pyqrack from 1.32.21 to 1.32.27 (Bump pyqrack from 1.32.21 to 1.32.27 #2582) [@dependabot, @natestemen]
• Bump codecov/codecov-action from 4 to 5 (Bump codecov/codecov-action from 4 to 5 #2576) [@dependabot]
• Bump pyqrack from 1.32.11 to 1.32.21 (Bump pyqrack from 1.32.11 to 1.32.21 #2580) [@dependabot]