Changelog Added A multi-IR staged pass manager (#16418) Allow 32-bit registers in classical.expr system (#16449) Add C API for inspecting control flow instructions (#16179) Add register query functions to the C API (#16177) Var-based measurement experiments (#16273) Add C API for inspecting classical expressions (#16178) Use GateCount over Depth in Clifford+T pipeline (#16218) Add QuantumCircuit method to compute estimated fidelity (#16292) Add C API for two qubit unitary peephole optimization pass (#16088) Extend litinski transformation for all Pauli rotations (#15974) Add additional Z and X rotation gate handling to CommutativeCancellation (#16191) Add PBC transpilation pipeline (#16270) Add Custom Gates/Instructions in Rust (#15684) Add QubitSparsePauliList.commutes (#16194) extend ConvertToPauliProductRotations to PPRs and PPMs (#16306) Expose qk_{circuit, dag}_global_phase in the C API (#16278) Add generate_clifford_t_pass_manager (#15918) Make uuid public on ParameterVector (#16216) Add DAG-based variant of BasisTranslator transpiler pass in C API (#15783) Add new multithreaded TwoQubitPeepholeOptimization pass (#13419) Improve single-qubit gate count in TwoQubitControlledUDecomposer (#16123) Track PauliLindbladMap generators during parity_sample (#16072) Add auto-generated ctypes bindings to C API (#16067) make plot_bloch_vector accept tuple input (#16103) Improve commutation checking of Pauli product rotations and measurements (#15815) Add option to set the seed_transpiler from environment (#16001) Enable try_matrix & friends for PPR and PPM (#16011) Add control flow support to ConvertToPauliRotations (#15941) Convert Sabre's lookahead to layer-based tracking (#14911) Support commutation check between Pauli-based gates and standard gates (After reverting #15488) (#15925) Extend RemoveIdentityEquivalent and CommutativeOptimization with PauliProductRotations (#15810) Support commutation check between Pauli-based gates and standard gates (#15488) Support phase gates in LitinskiTransformation (#15773) Fixed Add duration for reset to GenericBackendV2 (#16442) Fixes #16166: Preserve global_phase in dagdependency_to_circuit (#16323) Have SynthesizeRZRotations clear rsgridsynth global caches (#16392) Correctly combining control modifiers in OptimizeAnnotated (#16428) Fix stack-overflow segfault in OpenQASM 2 expression parsers (#16421) Fix MultiplierGate truncated result decomposition (#16394) Fix CommutationChecker for controlled rotation gates (#16337) Fix BitArray bitcount padding handling (#16309) Fix determinism in ConsolidateBlocks (#16237) Fix redundant unit numerator in pi_check pi fractions (#16175) Remove QPY warning on deserialising incomplete ParameterVectors (#16222) Fix composing virtual permutation layouts for ElidePermutations and StarPreRouting (#13945) QPY: Pauli Product Measurement/Rotation parameter fix (#16294) Reject loopback edges in CouplingMap (#16310) fix: Ensure there is no subtraction panic via underflow (#16249) Fix panic on 1.0 error in VF2Layout (#16285) Fix ConstrainedReschedule barrier handling (#16151) Initialize ConstrainedReschedule.target unconditionally (#16246) Sorts gate array to have deterministic gate selection (#16139) Fix UnrollForLoops global phase accumulation (#16201) Fix Statevector.evolve modifying input state in-place (Fixes 15750) (#15905) Fix Commuting2qGateRouter global phase handling (#16215) Fix InverseCancellation for symmetric pairs (#16153) Adding LinearFunction.inverse (#16203) Fix invalid simplification of XXPlusYY gates in CommutativeOptimization (#16163) Add safe shape checking to synth_cz_depth_line_mr (#16154) fix(library): clifford_6_4 template missing global_phase causes silent rejection (#15944) make plot_bloch_vector accept tuple input (#16103) Fix QPY loading delay integers durations incorrectly (#16076) Fix forced block consolidation for incomplete basis sets (#16075) Add option to set the seed_transpiler from environment (#16001) Fix panic in RemoveIdentityEquivalent with ParameterVector global phase (#16054) Fixed commutation checking between two Pauli product measurements (backport #16023) (#16040) Fixed commutation checking between two Pauli product measurements (#16023) Avoid triggering register/layout warning in remove_final_measurements (#16026) (#16037) Avoid triggering register/layout warning in remove_final_measurements (#16026) Fix C transpiler level 3 optimisation loop (#15967) (#16008) Fix C transpiler level 3 optimisation loop (#15967) Producing correct QFT circuits over linear connectivity with 32 or more qubits (#16004) (#16007) Producing correct QFT circuits over linear connectivity with 32 or more qubits (#16004) Fix TemplateOptimization dropping the global_phase on substitution (#15943) Reimplementing QSD using faer instead of nalgebra. (#15874) Rewrite QPY ParameterExpression handling in pure Polish form (#15934) (#15961) Rewrite QPY ParameterExpression handling in pure Polish form (#15934) Support commutation check between Pauli-based gates and standard gates (After reverting #15488) (#15925) Correctly enforce matrix size check in CommutationChecker (#15933) (#15936) Correctly enforce matrix size check in CommutationChecker (#15933) Support commutation check between Pauli-based gates and standard gates (#15488) QPY Rust and Python compatibility fixes (#15847) (#15887) QPY Rust and Python compatibility fixes (#15847) Remove unwanted remapping (#15872) (#15885) Remove unwanted remapping (#15872) Fix: BasisTranslator processing of nested ControlFlowOp (#15875) (#15884) Fix: BasisTranslator processing of nested ControlFlowOp (#15875) Fix: Initialize.inverse() now raises CircuitError immediately (#15782) (#15848) Fix: Initialize.inverse() now raises CircuitError immediately (#15782) Changed Bumpy minimum NumPy version to 2.0 (#16243) Write policy on dependency versioning (#16239) Deprecated Deprecations in qs_decomposition: opt_a* are not needed and decomposer_*q restrictions (#16158) Remove the commutation cache from the commutation checker (#15988) Build System Use stestr to prune its own history in CI jobs (#16364) Add C-API slot-assignment compatibility check (#16301) Add slot-listing command to bindgen-cli (#16289) Rename bindgen-c to bindgen-cli (#16096) Add option to use mimalloc as global allocator (#16024) Bump MSRV to 1.87 and nalgebra to the 0.34 release (#16045) Performance Update Sabre extended set on-the-fly (#14912) Use GateCount over Depth in Clifford+T pipeline (#16218) Move ParameterVector to Rust (#16228) Parallelize unitary synthesis (#16275) Use toposort instead of topological_op_nodes for DAG reconstruction (#15987) Perform ConsolidateBlocks analysis in parallel (#16230) Make Optimize1qGatesDecomposition multithreaded (#15567) Use np.bitwise_count in BitArray.bitcount (#15836) Use TwoQubitPeepholeOptimization in preset pass managers (#16136) Speedup SubstitutePi4Rotations (#16217) Parallelize the CommutationAnalysis pass (#16014) Pivot to foldhash for hash implementation in IndexMap (#15920) Update PauliProductRotationGate.to_matrix() from scipy to numpy (#16016) Add option to use mimalloc as global allocator (#16024)