Qiskit 1.3.0

Release notes: https://docs.quantum.ibm.com/api/qiskit/release-notes/1.3

Changelog

Deprecated

• Deprecate loose custom basis gates in preset pm pipieline (#13394)
• Add missing pulse-related deprecation (#13392)
• Deprecate the condition attribute and related functionality (#13223)
• Deprecate qiskit.result.mitigation (#13351)
• Deprecate BasicSimulator.configuration (#13367)
• Deprecate instruction_durations, timing_constraints and backend_properties (#13338)
• Add EchoRZXWeylDecomposition to Pulse deprecation (#13366)
• Deprecate Pulse package and dependencies (#13164)
• Improve deprecation of unit and duration (#13247)
• Deprecate the unit and duration attributes (#13224)
• deprecate BackendV1 in PassManagerConfig.from_backend (#12931)
• Deprecates StochasticSwap and suggests the use of SabreSwap (#12983)
• Deprecate BackendV1 and qiskit.providers.models (backport #12629) (#12864)
• Deprecate BackendV1 and qiskit.providers.models (#12629)
• Deprecate fake backends based on BackendV1 (backport #12660) (#12837)
• Deprecate fake backends based on BackendV1 (#12660)
• fixes #9355 deprecate visualize_transition (#12287) (#12822)
• fixes #9355 deprecate visualize_transition (#12287)

Added

• Reorder Pauli terms before Trotterization (#12925)
• Evolved operator functions (#13361)
• Add Rustiq-based synthesis for PauliEvolutionGate (#13301)
• Oxidize NLocal & family (#13310)
• Add pauli_twirl_2q_gates function (#13331)
• Add identity removal pass to presets (#13363)
• Binary arithmetic gates (#13354)
• Add Qiskit native QPY ParameterExpression serialization (#13356)
• Oxidize the ConsolidateBlocks pass (#13368)
• Add more default trials to sabre layout (#13360)
• Add grover_operator function (#13365)
• Add iterator-access methods to SparseObservable (#13370)
• Add meas_level, meas_return, and noise_model options to BackendSamplerV2 (#13357)
• Prepare PauliEvolutionGate for Rustiq & port it to Rust (#13295)
• More quantum circuit library refactoring (#13353)
• Optimise SparsePauliOp.from_operator (#11557)
• Boolean circuits as gates (#13333)
• Improve qubit tracking in HighLevelSynthesis (#13240)
• Parameterize Commutation Checker (#13302)
• IQP as circuit library function (and in Rust) (#13241)
• Implement SparseObservable.apply_layout (#13372)
• Improve speed of Pauli.to_label (#13379)
• Implement arithmetic on SparseObservable (#13298)
• Add RemoveIdentityEquivalent transpiler pass (#12384)
• Add official support for Python 3.13 (#13309)
• Add base representation of SparseObservable (#12671)
• Use Rust generator function for QuantumVolume class (#13283)
• Implement __eq__ for remaining standard-library gates except mcx (#13327)
• Fix QuantumCircuit.decompose for high-level objects (#13311)
• Improve deprecation of unit and duration (#13247)
• MCMTGate & plugins (#13150)
• Port ElidePermutations transpiler pass to Rust (#13094)
• Add Rust quantum volume function (#13238)
• Add some more gates to CollectCliffords pass (#13214)
• Make qasm3.CustomGate accessible from Python space (#13187)
• Oxidize PauliFeatureMap (#13045)
• Add equivalence-library rules between rzz and cp (#13019)
• Port RemoveDiagonalGatesBeforeMeasure to rust (#13065)
• Oxidize Commutation Analysis (#12995)
• Oxidize commutation checker (#12870)
• Oxidize random clifford (#12695)
• Fixed ZZFeatureMap not accepting a list of entanglement (#12767)
• Port the count_ops method in QuantumCircuit to Rust (#13050)
• Fully port Optimize1qGatesDecomposition to Rust (#12959)
• Promote CONTROL_FLOW_OP_NAMES to public API (#13057)
• [DAGCircuit Oxidation] Port DAGCircuit to Rust (#12550)
• Adding MCX synthesis plugins (#12961)
• Port synth_cz_depth_line_mr to Rust (#12949)
• Auxiliary qubit tracking in HighLevelSynthesis (#12911)
• Move mcx synthesis methods with ancillas to the synthesis library (#12904)
• 'Peephole' optimization - or: collecting and optimizing two-qubit blocks - before routing (#12727) (#12881)
• 'Peephole' optimization - or: collecting and optimizing two-qubit blocks - before routing (#12727)
• Avoid operator creation in transpiler (#12826) (#12875)
• Avoid operator creation in transpiler (#12826)
• Port star_preroute to rust (backport #12761) (#12846)
• Add config option to leverage all cores for sabre (#12780) (#12841)
• Port star_preroute to rust (#12761)
• Add config option to leverage all cores for sabre (#12780)
• Bitarray postselect (#12693) (#12836)
• Bitarray postselect (#12693)
• Add AnnotatedOperation.params and fix some control issues (#12752) (#12828)
• Add a default optimization level to generate_preset_pass_manager (#12150)
• Add AnnotatedOperation.params and fix some control issues (#12752)

Changed

• Add Qiskit native QPY ParameterExpression serialization (#13356)
• Use Rust generator function for QuantumVolume class (#13283)
• Raise minimum python version to 3.9 (#12910)
• [DAGCircuit Oxidation] Port DAGCircuit to Rust (#12550)
• Update metadata of Primitives V2 (#12784) (#12857)
• Update metadata of Primitives V2 (#12784)
• Change the default routing_method to sabre (#12806) (#12847)
• Change the default routing_method to sabre (#12806)

Fixed

• Fix InverseCancellation to run in classical blocks (#13454) (#13496)
• Fix parameter handling for NLocal(..., flatten=True) and standard gates (#13482) (#13495)
• HLS fix to not synthesize instructions already supported (#13417) (#13441)
• Fix process-based non-determinism in SparsePauliOp.to_matrix (#13439) (#13440)
• Fix the calculation for identity operator's expectation value (#13345) (#13436)
• Add argument assume_unitary to Operator.power. (#13319)
• Fix performance regression in looped QuantumCircuit.assign_parameters (#13337)
• Fix type of basis_gates in BasicSimulator configuration (#13385)
• Fix compatibility issues with SciPy 1.14 (#13358)
• Fix OpenQASM 2 gate definitions following a shadowed built-in gate (#13340)
• Fix QuantumCircuit.decompose for high-level objects (#13311)
• Fix bug in QPY symengine payload version handling (#13259)
• Workaround symengine serialization payload incompatibility (#13251)
• Don't run ElidePermutation if routing is disabled (#13184)
• Bug fix in ElidePermutations (#13186)
• Make dense layout algorithm deterministic when run in parallel (#13133)
• Fix qft-plugins for custom 'qft' gates (#13181)
• Re-allow non-standard includes in OpenQASM 3 exporter (#13148)
• improved fast-path detection in HLS (#13070)
• Fix an edge case in Sabre's release valve (#13114)
• Fix the matrix representation of CUGate in Rust (#13121)
• Fix creation of registers in synthesis methods (#13086)
• Restrict Split2QUnitaries to run on UnitaryGate (#13095)
• Bug fix in HoareOptimizer (#13083)
• Fix extraction of controlled parametric gates (#13067)
• Fixed ZZFeatureMap not accepting a list of entanglement (#12767)
• Fix use of node.op in Split2QUnitaries (#13015)
• Fix UnitaryGate.repeat() method (#12986)
• Move the circuit library's entanglement logic to Rust (#12950)
• [DAGCircuit Oxidation] Port DAGCircuit to Rust (#12550)
• Fix Rust-space TwoQubitBasisDecomposer for non-standard KAK gate (#13014)
• Extended the from_backend method of InstructionDurations to support both BackendV1 and BackendV2 (#12941)
• Fix Initialize.gates_to_uncompute method (#12976)
• Parsing of seed_transpiler in generate_preset_pass_manager (#12980)
• fix stateprep's normalize (#12988)
• adding copy argument to array (#12979)
• Fix setter so that SparsePauliOp.paulis.phase stays zero (#12884)
• Fix error message upon misalignment in PadDynamicalDecoupling (#12952) (#12954)
• Fix error message upon misalignment in PadDynamicalDecoupling (#12952)
• Improve error message on bad OpenQASM 3 basis_gates argument (#12945) (#12946)
• Improve error message on bad OpenQASM 3 basis_gates argument (#12945)
• Expose seed in Estimator and StatevectorEstimator (#12862)
• Fix dag visualization with Var wires (#12848) (#12924)
• Remove init peephole optimization discrete basis check (#12898) (#12920)
• Fix dag visualization with Var wires (#12848)
• Remove init peephole optimization discrete basis check (#12898)
• Fix parsing of huge OpenQASM 2 conditionals (#12774) (#12854)
• Fix StatevectorSampler to raise an error if a circuit with c_if is passed (#12842) (#12851)
• Fix parsing of huge OpenQASM 2 conditionals (#12774)
• Fix StatevectorSampler to raise an error if a circuit with c_if is passed (#12842)
• Make BitArray.{slice_bits,slice_shots,__getitem__} raise IndexError when indices are not valid (#12755) (#12845)
• Make BitArray.{slice_bits,slice_shots,__getitem__} raise IndexError when indices are not valid (#12755)
• Add AnnotatedOperation.params and fix some control issues (#12752) (#12828)
• Add AnnotatedOperation.params and fix some control issues (#12752)
• Fix BitArray.from_counts/from_samples to not fail for input with only 0 outcome and num_bits=None (#12800) (#12820)
• Fix BitArray.from_counts/from_samples to not fail for input with only 0 outcome and num_bits=None (#12800)

Qiskit 1.3.0rc2

Changelog

Fixed

• HLS fix to not synthesize instructions already supported (#13417) (#13441)
• Fix process-based non-determinism in SparsePauliOp.to_matrix (#13439) (#13440)
• Fix the calculation for identity operator's expectation value (#13345) (#13436)
• Fix basis_count checking in ConsolidateBlocks (#13463) (#13465)
• Fix post-oxidization change in ConsolidateBlocks behavior (#13450) (#13453)
• Avoid overhead for synthesized nodes lookup (#13424) (#13425)

Qiskit 1.3.0rc1

Changelog

Deprecated

• Deprecate loose custom basis gates in preset pm pipieline (#13394)
• Add missing pulse-related deprecation (#13392)
• Deprecate the condition attribute and related functionality (#13223)
• Deprecate qiskit.result.mitigation (#13351)
• Deprecate BasicSimulator.configuration (#13367)
• Deprecate instruction_durations, timing_constraints and backend_properties (#13338)
• Add EchoRZXWeylDecomposition to Pulse deprecation (#13366)
• Deprecate Pulse package and dependencies (#13164)
• Improve deprecation of unit and duration (#13247)
• Deprecate the unit and duration attributes (#13224)
• deprecate BackendV1 in PassManagerConfig.from_backend (#12931)
• Deprecates StochasticSwap and suggests the use of SabreSwap (#12983)
• Deprecate BackendV1 and qiskit.providers.models (backport #12629) (#12864)
• Deprecate BackendV1 and qiskit.providers.models (#12629)
• Deprecate fake backends based on BackendV1 (backport #12660) (#12837)
• Deprecate fake backends based on BackendV1 (#12660)
• fixes #9355 deprecate visualize_transition (#12287) (#12822)
• fixes #9355 deprecate visualize_transition (#12287)

Added

• Reorder Pauli terms before Trotterization (#12925)
• Evolved operator functions (#13361)
• Add Rustiq-based synthesis for PauliEvolutionGate (#13301)
• Oxidize NLocal & family (#13310)
• Add pauli_twirl_2q_gates function (#13331)
• Add identity removal pass to presets (#13363)
• Binary arithmetic gates (#13354)
• Add Qiskit native QPY ParameterExpression serialization (#13356)
• Oxidize the ConsolidateBlocks pass (#13368)
• Add more default trials to sabre layout (#13360)
• Add grover_operator function (#13365)
• Add iterator-access methods to SparseObservable (#13370)
• Add meas_level, meas_return, and noise_model options to BackendSamplerV2 (#13357)
• Prepare PauliEvolutionGate for Rustiq & port it to Rust (#13295)
• More quantum circuit library refactoring (#13353)
• Optimise SparsePauliOp.from_operator (#11557)
• Boolean circuits as gates (#13333)
• Improve qubit tracking in HighLevelSynthesis (#13240)
• Parameterize Commutation Checker (#13302)
• IQP as circuit library function (and in Rust) (#13241)
• Implement SparseObservable.apply_layout (#13372)
• Improve speed of Pauli.to_label (#13379)
• Implement arithmetic on SparseObservable (#13298)
• Add RemoveIdentityEquivalent transpiler pass (#12384)
• Add official support for Python 3.13 (#13309)
• Add base representation of SparseObservable (#12671)
• Use Rust generator function for QuantumVolume class (#13283)
• Implement __eq__ for remaining standard-library gates except mcx (#13327)
• Fix QuantumCircuit.decompose for high-level objects (#13311)
• Improve deprecation of unit and duration (#13247)
• MCMTGate & plugins (#13150)
• Port ElidePermutations transpiler pass to Rust (#13094)
• Add Rust quantum volume function (#13238)
• Add some more gates to CollectCliffords pass (#13214)
• Make qasm3.CustomGate accessible from Python space (#13187)
• Oxidize PauliFeatureMap (#13045)
• Add equivalence-library rules between rzz and cp (#13019)
• Port RemoveDiagonalGatesBeforeMeasure to rust (#13065)
• Oxidize Commutation Analysis (#12995)
• Oxidize commutation checker (#12870)
• Oxidize random clifford (#12695)
• Fixed ZZFeatureMap not accepting a list of entanglement (#12767)
• Port the count_ops method in QuantumCircuit to Rust (#13050)
• Fully port Optimize1qGatesDecomposition to Rust (#12959)
• Promote CONTROL_FLOW_OP_NAMES to public API (#13057)
• [DAGCircuit Oxidation] Port DAGCircuit to Rust (#12550)
• Adding MCX synthesis plugins (#12961)
• Port synth_cz_depth_line_mr to Rust (#12949)
• Auxiliary qubit tracking in HighLevelSynthesis (#12911)
• Move mcx synthesis methods with ancillas to the synthesis library (#12904)
• 'Peephole' optimization - or: collecting and optimizing two-qubit blocks - before routing (#12727) (#12881)
• 'Peephole' optimization - or: collecting and optimizing two-qubit blocks - before routing (#12727)
• Avoid operator creation in transpiler (#12826) (#12875)
• Avoid operator creation in transpiler (#12826)
• Port star_preroute to rust (backport #12761) (#12846)
• Add config option to leverage all cores for sabre (#12780) (#12841)
• Port star_preroute to rust (#12761)
• Add config option to leverage all cores for sabre (#12780)
• Bitarray postselect (#12693) (#12836)
• Bitarray postselect (#12693)
• Add AnnotatedOperation.params and fix some control issues (#12752) (#12828)
• Add a default optimization level to generate_preset_pass_manager (#12150)
• Add AnnotatedOperation.params and fix some control issues (#12752)

Changed

• Add Qiskit native QPY ParameterExpression serialization (#13356)
• Use Rust generator function for QuantumVolume class (#13283)
• Raise minimum python version to 3.9 (#12910)
• [DAGCircuit Oxidation] Port DAGCircuit to Rust (#12550)
• Update metadata of Primitives V2 (#12784) (#12857)
• Update metadata of Primitives V2 (#12784)
• Change the default routing_method to sabre (#12806) (#12847)
• Change the default routing_method to sabre (#12806)

Fixed

• Add argument assume_unitary to Operator.power. (#13319)
• Fix performance regression in looped QuantumCircuit.assign_parameters (#13337)
• Fix type of basis_gates in BasicSimulator configuration (#13385)
• Fix compatibility issues with SciPy 1.14 (#13358)
• Fix OpenQASM 2 gate definitions following a shadowed built-in gate (#13340)
• Fix QuantumCircuit.decompose for high-level objects (#13311)
• Fix bug in QPY symengine payload version handling (#13259)
• Workaround symengine serialization payload incompatibility (#13251)
• Don't run ElidePermutation if routing is disabled (#13184)
• Bug fix in ElidePermutations (#13186)
• Make dense layout algorithm deterministic when run in parallel (#13133)
• Fix qft-plugins for custom 'qft' gates (#13181)
• Re-allow non-standard includes in OpenQASM 3 exporter (#13148)
• improved fast-path detection in HLS (#13070)
• Fix an edge case in Sabre's release valve (#13114)
• Fix the matrix representation of CUGate in Rust (#13121)
• Fix creation of registers in synthesis methods (#13086)
• Restrict Split2QUnitaries to run on UnitaryGate (#13095)
• Bug fix in HoareOptimizer (#13083)
• Fix extraction of controlled parametric gates (#13067)
• Fixed ZZFeatureMap not accepting a list of entanglement (#12767)
• Fix use of node.op in Split2QUnitaries (#13015)
• Fix UnitaryGate.repeat() method (#12986)
• Move the circuit library's entanglement logic to Rust (#12950)
• [DAGCircuit Oxidation] Port DAGCircuit to Rust (#12550)
• Fix Rust-space TwoQubitBasisDecomposer for non-standard KAK gate (#13014)
• Extended the from_backend method of InstructionDurations to support both BackendV1 and BackendV2 (#12941)
• Fix Initialize.gates_to_uncompute method (#12976)
• Parsing of seed_transpiler in generate_preset_pass_manager (#12980)
• fix stateprep's normalize (#12988)
• adding copy argument to array (#12979)
• Fix setter so that SparsePauliOp.paulis.phase stays zero (#12884)
• Fix error message upon misalignment in PadDynamicalDecoupling (#12952) (#12954)
• Fix error message upon misalignment in PadDynamicalDecoupling (#12952)
• Improve error message on bad OpenQASM 3 basis_gates argument (#12945) (#12946)
• Improve error message on bad OpenQASM 3 basis_gates argument (#12945)
• Expose seed in Estimator and StatevectorEstimator (#12862)
• Fix dag visualization with Var wires (#12848) (#12924)
• Remove init peephole optimization discrete basis check (#12898) (#12920)
• Fix dag visualization with Var wires (#12848)
• Remove init peephole optimization discrete basis check (#12898)
• Fix parsing of huge OpenQASM 2 conditionals (#12774) (#12854)
• Fix StatevectorSampler to raise an error if a circuit with c_if is passed (#12842) (#12851)
• Fix parsing of huge OpenQASM 2 conditionals (#12774)
• Fix StatevectorSampler to raise an error if a circuit with c_if is passed (#12842)
• Make BitArray.{slice_bits,slice_shots,__getitem__} raise IndexError when indices are not valid (#12755) (#12845)
• Make BitArray.{slice_bits,slice_shots,__getitem__} raise IndexError when indices are not valid (#12755)
• Add AnnotatedOperation.params and fix some control issues (#12752) (#12828)
• Add AnnotatedOperation.params and fix some control issues (#12752)
• Fix BitArray.from_counts/from_samples to not fail for input with only 0 outcome and num_bits=None (#12800) (#12820)
• Fix BitArray.from_counts/from_samples to not fail for input with only 0 outcome and num_bits=None (#12800)

Qiskit 1.2.4

Changelog

Fixed

• Fix bug in QPY symengine payload version handling (backport #13259) (#13260)

Qiskit 1.2.3

Warning

This release was yanked from PyPI due to a bug in its only changed behaviour. The release is kept here for posterity, but there is little reason to use this.

Changelog

Fixed

• Workaround symengine serialization payload incompatibility (backport #13251) (#13255)

Qiskit 0.46.3

Release notes: https://docs.quantum.ibm.com/api/qiskit/release-notes/0.46#0463

This is the final release in the 0.x release series marking the end-of-life of the release series.

Changelog

Fixed

• Fix C3SXGate to_matrix method (backport #12742) (#12744)
• Fix replace_block_with_op on operations with wrong number of qubits (#12637) (#12699)
• GenericBackendV2 should fail when the backend cannot allocate the basis gate because its size (backport #12653) (#12666)
• Fix some bugs in loading Solovay Kitaev decompositions (#12579) (#12665)
• Invalidate parameters cache on circuit copy (backport #12619) (#12620)

Qiskit 1.2.2

Changelog

Fixed

• Don't run ElidePermutation if routing is disabled (#13184) (#13194)
• Bug fix in ElidePermutations (#13186) (#13191)
• Make dense layout algorithm deterministic when run in parallel (#13133) (#13190)
• Fix qft-plugins for custom 'qft' gates (#13181) (#13189)
• Re-allow non-standard includes in OpenQASM 3 exporter (#13148) (#13185)
• Fix the text drawer with partially idle wires (#13149)

Qiskit 1.2.1

Changelog

Fixed

• Fix an edge case in Sabre's release valve (#13114) (#13130)
• Fix creation of registers in synthesis methods (backport #13086) (#13123)
• Fix the matrix representation of CUGate in Rust (#13121) (#13124)
• Restrict Split2QUnitaries to run on UnitaryGate (#13095) (#13097)
• Bug fix in HoareOptimizer (#13083) (#13087)
• Fix extraction of controlled parametric gates (#13067) (#13080)
• Fix use of node.op in Split2QUnitaries (backport #13015) (#13062)
• Fix Rust-space TwoQubitBasisDecomposer for non-standard KAK gate (#13014) (#13026)
• Extended the from_backend method of InstructionDurations to support both BackendV1 and BackendV2 (#12941) (#13009)
• Fix Initialize.gates_to_uncompute method (#12976) (#13000)
• Parsing of seed_transpiler in generate_preset_pass_manager (backport #12980) (#12996)
• Fix normalize in StatePreparation (#12988) (#12992)
• Add the copy argument to __array__ (#12979) (#12987)

Qiskit 1.3.0b1

Changelog

Deprecated

• Deprecates StochasticSwap and suggests the use of SabreSwap (#12983)
• Deprecate BackendV1 and qiskit.providers.models (backport #12629) (#12864)
• Deprecate BackendV1 and qiskit.providers.models (#12629)
• Deprecate fake backends based on BackendV1 (backport #12660) (#12837)
• Deprecate fake backends based on BackendV1 (#12660)
• fixes #9355 deprecate visualize_transition (#12287) (#12822)
• fixes #9355 deprecate visualize_transition (#12287)

Added

• Add equivalence-library rules between rzz and cp (#13019)
• Port the count_ops method in QuantumCircuit to Rust (#13050)
• Fully port Optimize1qGatesDecomposition to Rust (#12959)
• Promote CONTROL_FLOW_OP_NAMES to public API (#13057)
• [DAGCircuit Oxidation] Port DAGCircuit to Rust (#12550)
• Move mcx synthesis methods with ancillas to the synthesis library (#12904)
• 'Peephole' optimization - or: collecting and optimizing two-qubit blocks - before routing (#12727) (#12881)
• 'Peephole' optimization - or: collecting and optimizing two-qubit blocks - before routing (#12727)
• Avoid operator creation in transpiler (#12826) (#12875)
• Avoid operator creation in transpiler (#12826)
• Port star_preroute to rust (backport #12761) (#12846)
• Add config option to leverage all cores for sabre (#12780) (#12841)
• Port star_preroute to rust (#12761)
• Add config option to leverage all cores for sabre (#12780)
• Bitarray postselect (#12693) (#12836)
• Bitarray postselect (#12693)
• Add AnnotatedOperation.params and fix some control issues (#12752) (#12828)
• Add a default optimization level to generate_preset_pass_manager (#12150)
• Add AnnotatedOperation.params and fix some control issues (#12752)

Changed

• Raise minimum python version to 3.9 (#12910)
• [DAGCircuit Oxidation] Port DAGCircuit to Rust (#12550)
• Update metadata of Primitives V2 (#12784) (#12857)
• Update metadata of Primitives V2 (#12784)
• Change the default routing_method to sabre (#12806) (#12847)
• Change the default routing_method to sabre (#12806)

Fixed

• Fix an edge case in Sabre's release valve (#13114)
• Fix the matrix representation of CUGate in Rust (#13121)
• Fix creation of registers in synthesis methods (#13086)
• Restrict Split2QUnitaries to run on UnitaryGate (#13095)
• Bug fix in HoareOptimizer (#13083)
• Fix extraction of controlled parametric gates (#13067)
• Fix use of node.op in Split2QUnitaries (#13015)
• Fix UnitaryGate.repeat() method (#12986)
• Move the circuit library's entanglement logic to Rust (#12950)
• [DAGCircuit Oxidation] Port DAGCircuit to Rust (#12550)
• Fix Rust-space TwoQubitBasisDecomposer for non-standard KAK gate (#13014)
• Extended the from_backend method of InstructionDurations to support both BackendV1 and BackendV2 (#12941)
• Fix Initialize.gates_to_uncompute method (#12976)
• fix stateprep's normalize (#12988)
• adding copy argument to array (#12979)
• Fix setter so that SparsePauliOp.paulis.phase stays zero (#12884)
• Fix error message upon misalignment in PadDynamicalDecoupling (#12952) (#12954)
• Fix error message upon misalignment in PadDynamicalDecoupling (#12952)
• Improve error message on bad OpenQASM 3 basis_gates argument (#12945) (#12946)
• Improve error message on bad OpenQASM 3 basis_gates argument (#12945)
• Expose seed in Estimator and StatevectorEstimator (#12862)
• Fix dag visualization with Var wires (#12848) (#12924)
• Remove init peephole optimization discrete basis check (#12898) (#12920)
• Fix dag visualization with Var wires (#12848)
• Remove init peephole optimization discrete basis check (#12898)
• Fix parsing of huge OpenQASM 2 conditionals (#12774) (#12854)
• Fix StatevectorSampler to raise an error if a circuit with c_if is passed (#12842) (#12851)
• Fix parsing of huge OpenQASM 2 conditionals (#12774)
• Fix StatevectorSampler to raise an error if a circuit with c_if is passed (#12842)
• Make BitArray.{slice_bits,slice_shots,__getitem__} raise IndexError when indices are not valid (#12755) (#12845)
• Make BitArray.{slice_bits,slice_shots,__getitem__} raise IndexError when indices are not valid (#12755)
• Add AnnotatedOperation.params and fix some control issues (#12752) (#12828)
• Add AnnotatedOperation.params and fix some control issues (#12752)
• Fix BitArray.from_counts/from_samples to not fail for input with only 0 outcome and num_bits=None (#12800) (#12820)
• Fix BitArray.from_counts/from_samples to not fail for input with only 0 outcome and num_bits=None (#12800)

Qiskit 1.2.0

Release notes: https://docs.quantum.ibm.com/api/qiskit/release-notes/1.2

Changelog

Deprecated

• Deprecate BackendV1 and qiskit.providers.models (backport #12629) (#12864)
• Deprecate fake backends based on BackendV1 (backport #12660) (#12837)
• fixes #9355 deprecate visualize_transition (#12287) (#12822)
• Deprecate V1 Primitives and their utils (#12575)
• Deprecate Qobj and assemble (#12649)
• Deprecate accidentally public internal helper methods on QuantumCircuit (#12785)
• Improve the performance of the ProductFormula synthesizers (#12724)
• Add warning for bad justify input, in circuit_drawer (#12458)
• Deprecate tuple-like access to CircuitInstruction (#12640)

Added

• 'Peephole' optimization - or: collecting and optimizing two-qubit blocks - before routing (#12727) (#12881)
• Avoid operator creation in transpiler (#12826) (#12875)
• Port star_preroute to rust (backport #12761) (#12846)
• Add config option to leverage all cores for sabre (#12780) (#12841)
• Bitarray postselect (#12693) (#12836)
• Add AnnotatedOperation.params and fix some control issues (#12752) (#12828)
• Move generate_preset_pass_manager to a standalone file (#12762)
• Update version of OpenQASM 3.0 standard library (#12387)
• Port synth_permutation_depth_lnn_kms to Rust (#12746)
• Rewrite OpenQASM 3 exporter symbol table (#12776)
• Port synth_clifford_bm to Rust. (#12714)
• Update MCX recursive synthesis method to reduce number of CX gates (#12772)
• Barebone generic backend options (#12747)
• Adding QFT gate to natively reason about Quantum Fourier Transforms (#11463)
• Improve the performance of the ProductFormula synthesizers (#12724)
• Improved MCXVChain with dirty auxiliary qubits (#9687)
• Oxidize synth_cnot_count_full_pmh (#12588)
• Add Uniform State Preparation (#12112)
• Port synth_clifford_greedy to Rust (#12601)
• Oxidize synth_permutation_acg (#12543)
• improving quantum_causal_cone method in python (#12668)
• binary matrices utils in rust (#12456)
• Add infrastructure for gates, instruction, and operations in Rust (#12459)
• Add option to user config to control idle_wires in circuit drawer (#12462)
• [unitaryHACK] Controlling the Insertion of Multi-Qubit Gates in the Generation of Random Circuits #12059 (#12483)
• Add pos for Parameter (#12496)
• Update transpile() and generate_preset_pass_manager to convert loose input of constraints to a Target with Target.from_configuration() (#12185)
• Add DenseLayout trial to SabreLayout (#12453)
• add insert_barrier argument to UnitaryOverlap (#12321)
• Add new method for single bitstring target when measuring stabilizerstate probabilities_dict (#12147)
• Replace initialization method by Isometry in StatePreparation (#12178)

Changed

• Update metadata of Primitives V2 (#12784) (#12857)
• Change the default routing_method to sabre (#12806) (#12847)
• Use rustworkx 0.15.0 features in DAGCircuit.remove_op_node (#12756)
• Add infrastructure for gates, instruction, and operations in Rust (#12459)

Fixed

• Fix error message upon misalignment in PadDynamicalDecoupling (#12952) (#12954)
• Improve error message on bad OpenQASM 3 basis_gates argument (#12945) (#12946)
• Fix dag visualization with Var wires (#12848) (#12924)
• Remove init peephole optimization discrete basis check (#12898) (#12920)
• Fix parsing of huge OpenQASM 2 conditionals (#12774) (#12854)
• Fix StatevectorSampler to raise an error if a circuit with c_if is passed (#12842) (#12851)
• Make BitArray.{slice_bits,slice_shots,__getitem__} raise IndexError when indices are not valid (#12755) (#12845)
• Add AnnotatedOperation.params and fix some control issues (#12752) (#12828)
• Fix BitArray.from_counts/from_samples to not fail for input with only 0 outcome and num_bits=None (#12800) (#12820)
• fix issue/12311 with fractional gate in basis (#12511)
• Validate order kwarg in BitArray.from_bool_array() (#12686)
• Rewrite OpenQASM 3 exporter symbol table (#12776)
• Fixing and documenting how the Estimator calculates stds (#12670)
• Add clifford gates to collect_cliffords (#12750)
• Fix C3SXGate to_matrix method (#12742)
• Oxidize synth_cnot_count_full_pmh (#12588)
• Fix replace_block_with_op on operations with wrong number of qubits (#12637)
• Enable the new efficient MCX decompose (#12628)
• GenericBackendV2 should fail when the backend cannot allocate the basis gate because its size (#12653)
• Fix some bugs in loading Solovay Kitaev decompositions (#12579)
• Invalidate parameters cache on circuit copy (#12619)
• Fix v2 pulse drawer (#12608)
• Use hash of numeric value for bound parameter expressions (#12488)
• Fix bugs with VF2Layout pass and Qiskit Aer 0.13 (#11585)
• Fix QuantumCircuit.depth with zero-operands and Expr nodes (#12429)
• Avoid exception in Target.has_calibration for instruction without properties (#12526)
• Implement __array__ for qasm2._DefinedGate (#12119)
• Fix a bug in isometry.rs (#12469)
• Avoid lossing precision when scaling frequencies (#12392) (#12416)
• Avoid lossing precision when scaling frequencies (#12392)
• Fix unnecessary serialisation of PassManager in serial contexts (#12410) (#12413)
• Fix unnecessary serialisation of PassManager in serial contexts (#12410)
• Handle huge integers in OpenQASM 2 expression evaluator (#12140) (#12400)
• Fix a corner case of SparsePauliOp.apply_layout (#12375) (#12402)
• Fix a corner case of SparsePauliOp.apply_layout (#12375)
• Handle huge integers in OpenQASM 2 expression evaluator (#12140)
• Fix {Pauli,SparsePauliOp}.apply_layout to raise an error with negative or duplicate indices (#12385) (#12386)
• Fix {Pauli,SparsePauliOp}.apply_layout to raise an error with negative or duplicate indices (#12385)
• fix edge coloring bug in plot_coupling_map (#12369) (#12379)
• Fix missing layout in Commuting2qGateRouter (#12137) (#12383)
• Fix missing layout in Commuting2qGateRouter (#12137)
• fix edge coloring bug in plot_coupling_map (#12369)