Changelog

Deprecated

• Deprecate PauliList estimator observables (#11055)
• Remove validation methods from primitive base classes (#11052)
• Deprecate legacy primitive attributes in base classes (#11051)
• Deprecate the discrete pulse library (#11110)

Added

• Ensure QuantumCircuit.append validates captures in control-flow (#10974)
• Decomposition of single R gate in RR basis should be one R gate, not two (#11304)
• Add pow as supported operation for ParameterExpression (#11235)
• Add representation of storage-owning Var nodes (#10944)
• Add support for Python 3.12 (#11262)
• Add pass to filter ops and label inserted barriers (#10323)
• Oxidize QuantumCircuit._data and intern CircuitInstruction args (#10827)
• Fixed Issue 11026: SparsePauliOp.apply_layout should do nothing if given None (#11041)
• Add new transpiler exception class for too many qubits (#11241)
• Singletonized Measure and Reset instructions (#11170)
• Improved Documentation and Error-Signaling of VF2PostLayout (#11090)
• Update and expand DAGDependency drawer (#11103)
• List support for coupling map in pass manager (#11063)
• Add disable_validation option to SymbolicPulse (#11029)
• Track runtime variables in control-flow builders (#10977)

Changed

• Replace qiskit metapackage with qiskit-terra (#11271)
• Update platform support and require symengine (#10902)

Removed

• Remove legacy qasm2 parser (#11308)
• Remove leftover algorithm/opflow utils (#11324)
• Remove alg_globals and validation (#11252)
• Remove deprecated opflow module, QuantumInstance and related utils (#11111)
• Remove qiskit_version (deprecated in Qiskit Terra 0.25) (#11305)
• Remove deprecated IntegerComparator.num_ancilla_qubits (#11306)
• Fixed issue 11143 by removing deprecated code (#11159)
• removed the deprecated code since 0.23 (qiskit.visualization.pulse) (#11213)
• Remove the discrete pulse library (#11277)
• Remove deprecated qiskit.algorithms module (#11086)
• Remove namespace packaging hooks (#11223)
• Expire deprecation on qargs=None in DAG appends (#11190)

Fixed

• Don't substitute ideal gates in target with Optimize1qGatesDecomposition (#11351)
• Update Instruction.condition_bits for runtime classical expressions (#11325)
• Avoid routing 2q barriers in SabreSwap (#11295)
• Fix backend_util.py and test cases to support Aer 0.13 (#11172)
• Fix issue with ScheduleBlock qpy serialization and use_symengine (#11261)
• Allow correct retrieval of circuit with initialize instruction from qpy file (#11206)
• Fix QuantumCircuit.barrier argument conversion (#11272)
• Do not ignore global phases when comparing unitary gates (#11247)
• Fix pickling of conditioned custom gates from OpenQASM 2 import (#11175)
• Fix Channel.__hash__ in multiprocessing contexts (#11251)
• Speed up InverseCancellation when there's nothing to cancel (#11211)
• Allow barriers in overlap circuit inputs (#11179)
• Removed 2pi wrapping for global phase parameter (#10631)
• Fix circuit drawer returning qubit[register] names for input (#11096)
• Fix build ordering of BlueprintCircuit._append (#11181)
• Collect classical registers using a set (#10496) (#10505)
• Fix lack of alternative for Optimizer in AQC (#11099)
• Emit a descriptive error when the QPY version is too new (#11074)
• Plot State City Visualization Fixes (#10590)
• Fix Barrier broadcast arguments (#11113)
• Fix calling backend.name() for backendV2 (#11065)
• Fix Sabre extended set population order (#10651)