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Port ConstrainedReschedule to Rust

Changelog: NoneDo not include in the GitHub Release changelog.Do not include in the GitHub Release changelog.

Intern PRPR submitted by IBM Quantum internsPR submitted by IBM Quantum interns

mod: transpilerIssues and PRs related to TranspilerIssues and PRs related to Transpiler

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

Status: Merged (completed).

Qiskit/qiskitnumber 14883

#14883 In Qiskit/qiskit;

· by phalakbh was closed on Mar 19, 2026

Add C API method to read unitary matrices from QkCircuit

C APIRelated to the C APIRelated to the C API

type: feature requestNew feature or requestNew feature or request

Status: Closed (completed).

#15362 In Qiskit/qiskit;

· by jakelishman was closed on Feb 18, 2026

Port ConstrainedReschedule to Rust

mod: transpilerIssues and PRs related to TranspilerIssues and PRs related to Transpiler

performance

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

Status: Closed (completed).

#12268 In Qiskit/qiskit;

· by mtreinish was closed on Mar 19, 2026

Enable parameterized gates in C

C APIRelated to the C APIRelated to the C API

Changelog: AddedAdd an "Added" entry in the GitHub Release changelog.Add an "Added" entry in the GitHub Release changelog.

Changelog: ChangedAdd a "Changed" entry in the GitHub Release changelog.Add a "Changed" entry in the GitHub Release changelog.

Status: Merged (completed).

Qiskit/qiskitnumber 15106

#15106 In Qiskit/qiskit;

· by Cryoris was closed on Mar 19, 2026

Parameter support for C

C APIRelated to the C APIRelated to the C API

Status: Closed (completed).

Feature request

#14990 In Qiskit/qiskit;

· by Cryoris was closed on Mar 19, 2026

Extend SubstitutePi4Rotations to 2q gates

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

mod: transpilerIssues and PRs related to TranspilerIssues and PRs related to Transpiler

type: feature requestNew feature or requestNew feature or request

Status: Closed (completed).

#15381 In Qiskit/qiskit;

· by Cryoris was closed on Feb 9, 2026

Add fixedbitset clifford for simd bitwise composition

Changelog: NoneDo not include in the GitHub Release changelog.Do not include in the GitHub Release changelog.

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

performance

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

Status: Merged (completed).

Qiskit/qiskitnumber 15325

#15325 In Qiskit/qiskit;

· by mtreinish was closed on Feb 10, 2026

Text circuit drawer

Changelog: NoneDo not include in the GitHub Release changelog.Do not include in the GitHub Release changelog.

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

Status: Merged (completed).

Qiskit/qiskitnumber 15357

#15357 In Qiskit/qiskit;

· by Shobhit21287 was closed on Mar 19, 2026

Add qk_circuit_draw function to the C API

C APIRelated to the C APIRelated to the C API

Changelog: AddedAdd an "Added" entry in the GitHub Release changelog.Add an "Added" entry in the GitHub Release changelog.

Status: Merged (completed).

Qiskit/qiskitnumber 15361

#15361 In Qiskit/qiskit;

· by eliarbel was closed on Mar 19, 2026

Rust implementation of the QPY module

Changelog: NoneDo not include in the GitHub Release changelog.Do not include in the GitHub Release changelog.

mod: qpyRelated to QPY serializationRelated to QPY serialization

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

Status: Merged (completed).

Qiskit/qiskitnumber 14166

#14166 In Qiskit/qiskit;

· by gadial was closed on Jan 18, 2026

Port QPY serialization to Rust

mod: qpyRelated to QPY serializationRelated to QPY serialization

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

type: feature requestNew feature or requestNew feature or request

Status: Closed (completed).

#13131 In Qiskit/qiskit;

· by mtreinish was closed on Jan 18, 2026

Make remove identity equiv multithreaded

Changelog: NoneDo not include in the GitHub Release changelog.Do not include in the GitHub Release changelog.

mod: transpilerIssues and PRs related to TranspilerIssues and PRs related to Transpiler

performance

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

Status: Merged (completed).

Qiskit/qiskitnumber 14719

#14719 In Qiskit/qiskit;

· by mtreinish was closed on Mar 13, 2026

Fast Rust path in evolved_operator_ansatz should support SparseObservable

type: feature requestNew feature or requestNew feature or request

Status: Closed (completed).

#15433 In Qiskit/qiskit;

· by Cryoris was closed on Feb 18, 2026

Control mutability in PackedInstructions

Changelog: NoneDo not include in the GitHub Release changelog.Do not include in the GitHub Release changelog.

mod: circuitRelated to the core of the `QuantumCircuit` class or the circuit libraryRelated to the core of the `QuantumCircuit` class or the circuit library

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

Status: Closed (abandoned).

Qiskit/qiskitnumber 14688

#14688 In Qiskit/qiskit;

· by raynelfss was closed on Mar 18, 2026

Add VF2PostLayout to the C Transpiler pipeline

C APIRelated to the C APIRelated to the C API

Changelog: NoneDo not include in the GitHub Release changelog.Do not include in the GitHub Release changelog.

mod: transpilerIssues and PRs related to TranspilerIssues and PRs related to Transpiler

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

Status: Merged (completed).

Qiskit/qiskitnumber 15151

#15151 In Qiskit/qiskit;

· by mtreinish was closed on Mar 4, 2026

Add C/Python interop for Target and DAGCircuit

C APIRelated to the C APIRelated to the C API

Changelog: AddedAdd an "Added" entry in the GitHub Release changelog.Add an "Added" entry in the GitHub Release changelog.

mod: transpilerIssues and PRs related to TranspilerIssues and PRs related to Transpiler

Status: Merged (completed).

Qiskit/qiskitnumber 15337

#15337 In Qiskit/qiskit;

· by jakelishman was closed on Mar 11, 2026

Unify handling of variables and stretches in CircuitData and DAGCircuit

Changelog: NoneDo not include in the GitHub Release changelog.Do not include in the GitHub Release changelog.

RustThis PR or issue is related to Rust code in the repositoryThis PR or issue is related to Rust code in the repository

Status: Merged (completed).

Qiskit/qiskitnumber 14696

#14696 In Qiskit/qiskit;

· by eliarbel was closed on Mar 16, 2026

Implement SparseObservable.evolve

mod: quantum infoRelated to the Quantum Info module (States & Operators)Related to the Quantum Info module (States & Operators)

type: feature requestNew feature or requestNew feature or request

Status: Closed (completed).

#13763 In Qiskit/qiskit;

· by jakelishman was closed on Mar 18, 2026

Implement unary negation operator for expr.Expr

type: feature requestNew feature or requestNew feature or request

Status: Closed (completed).

Feature request

#13966 In Qiskit/qiskit;

· by kevinhartman was closed on Mar 19, 2026

Typed iterator in QASM3 export of for loops

Changelog: FixedAdd a "Fixed" entry in the GitHub Release changelog.Add a "Fixed" entry in the GitHub Release changelog.

Community PRPRs from contributors that are not 'members' of the Qiskit repoPRs from contributors that are not 'members' of the Qiskit repo

Status: Merged (completed).

Qiskit/qiskitnumber 15290

#15290 In Qiskit/qiskit;

· by arthurostrauss was closed on Feb 23, 2026

Support generic circuit to PBC transformation

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

type: feature requestNew feature or requestNew feature or request

Status: Closed (completed).

#15451 In Qiskit/qiskit;

· by Cryoris was closed on Mar 8, 2026

Expose PBC data via C

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

type: feature requestNew feature or requestNew feature or request

Status: Closed (completed).

Feature request

#15453 In Qiskit/qiskit;

· by Cryoris was closed on Mar 16, 2026

Expose the Litinski transformation & co to C

C APIRelated to the C APIRelated to the C API

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

type: feature requestNew feature or requestNew feature or request

Status: Closed (completed).

#15454 In Qiskit/qiskit;

· by Cryoris was closed on Mar 18, 2026

Implement RZSynthesis pass with caching of Clifford+T synthesis results

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

performance

Status: Closed (completed).

Feature request

#15455 In Qiskit/qiskit;

· by Cryoris was closed on Mar 17, 2026

Benchmarks for FTQC pipelines

fault tolerancerelated to fault tolerance compilationrelated to fault tolerance compilation

Status: Closed (completed).

#15456 In Qiskit/qiskit;

· by Cryoris was closed on Feb 12, 2026