Changelog

Deprecated

• Deprecate Python 3.9 support (#14543)
• Move PendingDeprecations to Deprecations in the circuit library (#13604)

Added

• Support stretchy delays in box (#13899)
• Annotation serialisation framework (#14439)
• Introduce PauliLindbladMap (#14383)
• Initial Target C API (#14248)
• Oxidize the Solovay Kitaev algorithm (#14203)
• Context-aware dynamical decoupling (#12825)
• added get_qpy_version to retrieve qpy version (#14212)
• Added support for querying version information in the Qiskit C API. (#14423)
• Add QubitSparsePauli and QubitSparsePauliList classes to quantum_info (#14283)
• Change style of DAG generated in dag_drawer() (#13253)
• Add method has_control_flow_op() to QuantumCircuit (#13936)
• Directly expose QkComplex64 to the C API (#14340)
• Simpler definitions for standard gates (#14180)
• Clifford unitary synthesis plugin (#14429)
• CliffordT optimization (#14433)
• Implementation of a Limited QASM3 Exporter except controlflow and Classical Variables in Rust (#14226)
• block diagonal optimized quantum shannon decomposition (#13688)
• Clifford+T transpiler pipeline (#14225)
• New methods in ObservablesArray: sparse_observables_array and sparse_observables_array_slice (#14344)
• Added VF2PostLayout at the end of optimization stage for level 3 (#14120)
• Visualize boxes with disjoint vertical spans in parallel (#14386)
• Add ParameterExpression in Rust (#13278)
• Add C API function to add a delay (#14347)
• C-API: Add fix for Windows and C++ (#14273)
• Ancilla-Free Quantum Adder with Sublinear Depth (#13975)
• Wrote ObservablesArray.apply_layout and some additional methods (#14289)
• Add initial C API for circuit construction (#14006)
• Unify identifer handling of Var and Stretch in DAGCircuit (#14000)
• Add random circuit with graph (#12474)
• HLS plugin for new MCX Decompositions (#14143)
• Improve annotated plugin (#13916)
• Make PrimitiveJob serializable (#12963)
• Better MCX Decomposition with logarithmic Toffoli Depth (#13922)
• Better synthesis for multi-controlled U1Gate (#14061)
• Update CS and CSdg in the equivalence library (#14001)

Changed

• Remove sympy as a hard dependency (#14396)
• Improve Sabre heuristic defaults (#14458)
• Remove symengine from the requirements list (#14389)
• Remove dateutil as a requirement (#14395)
• Do not construct layout passes with no coupling map (#14353)

Fixed

• Fix sympify() for expressions with vector element .subs() (#14641) (#14642)
• Extending rustiq synthesis plugin to work SparseObservables (#14582) (#14628)
• Fix classical bit mapping in HLS pass (#14597) (#14625)
• Fix ElidePermutations pass in the presence of PermutationGates (#14603) (#14623)
• Fix ApplyLayout with empty layout (#14606) (#14613)
• Fix random number generator seed argument for quantum_volume (#14586) (#14592)
• allows string values in assign_parameters with strict=False (#14365) (#14554)
• Fix HLS preserve order (#14539)
• Fix parameter deserialization bugs in QPY (#13727)
• Reduce space inside BoxOps and fix layering issues with boxes (#14529)
• Oxidize the Solovay Kitaev algorithm (#14203)
• Fix Sabre rebuild with nested Var and Stretch (#14488)
• Fixed AND terms for OR in quantum_or.py (#14436)
• Fix ConsolidateBlocks pass for collecting non-CX KAK gate (#14417)
• Fix construction of IQP circuits (#14363)
• Bug fix in HighLevelSynthesis fast-return mechanism (#14349)
• Fix UnitarySynthesis to respect synth_gates (#14345)
• C-API: Add fix for Windows and C++ (#14273)
• Fix alignment checks of stretch variables (#14330)
• Fix incorrect error estimation in VF2 fallback (#14218)
• Fix caching logic in SolovayKitaevSynthesis plugin (#14304)
• Bug fixes in Solovay Kitaev Decomposition (#14217)
• Fix display of Box End after transpile in text drawer (#14278)
• Fix pickle and repr for Duration. (#14174)
• Fix circuit-metadata propagation in SabreLayout (#14186)
• use XXPlusYYGate in excitation_preserving (#14128)
• Fix qpy for MCMTGate (#14096) (#14118)
• Fix qpy for MCMTGate (#14096)
• Consistent sparse list format in sparse operators (#14067) (#14110)
• Consistent sparse list format in sparse operators (#14067)
• Minor fixes/improvements to some MCX synthesis methods (#14093)
• Fix ignored errors/durations in generate_preset_pass_manager if dt is set (#14065) (#14098)
• Fix ignored errors/durations in generate_preset_pass_manager if dt is set (#14065)
• Fix global phase update in BasisTranslator Pass (backport [#14078]) (#14092)
• Fix global phase update in BasisTranslator Pass (#14078)
• Fixes to various graphs in the docs (#14055) (#14076)
• Fixes to various graphs in the docs (#14055)
• Fix deepcopy/pickle of DAGCircuit variable IO nodes (backport [#14041]) (#14044)
• Fix deepcopy/pickle of DAGCircuit variable IO nodes (#14041)
• Introduce custom sympy srepr parser (#14024)
• Introduce custom sympy srepr parser [stable/2.0] (#14023)
• Preserve bit locations through pickle (backport [#13980]) (#14011)
• Preserve bit locations through pickle (#13980)
• Fix string and standard gate mismatch in commutation checker (backport [#13991]) (#14004)
• Fix string and standard gate mismatch in commutation checker (#13991)