Release notes: https://qiskit.org/documentation/release_notes.html#qiskit-0-39-0
Changelog
Deprecated
- Switch to primitive support in QNSPSA (8682)
- Pending deprecate algo eigen_solvers (8651)
- Clifford does not use StabilizerTable as internal data and PendingDeprecation of PauliTable and StabilizerTable (7269)
- Pending deprecate algorithms (8703)
- Rewrite Amplitude Estimators with Primitives (8656)
- Quantum Phase Estimation algorithms with primitives. (8666)
- Support `Sampler` in `Grover` (8647)
- Prepare for removal of `tweedledum` as a requirement (8738)
- Adds observable evaluator with primitives. (8683)
- Time Evolution Framework with primitives. (8681)
- deprecate qiskit.pulse.utils.deprecated_functionality in favor of qiskit.utils.deprecation.deprecate_function (8696)
- Deprecate Algorithms Factorizers and Linear Solvers (8617)
- Add run method to primitives (8382)
Added
- Modify preset pass managers for control-flow support (8830)
- Add controlflow handling to stochastic swap pass (8418)
- Add support for custom backend transpiler stages (8648)
- Update GateDirection and checker for control flow (8822)
- Add control-flow support to `GatesInBasis` (8823)
- plot_histogram now a valid histogram, plot_distribution for non-discrete data (8762)
- Sampled expectation value for distributions (8748)
- Implementing pluggable HighLevelSynthesis (8548)
- Handle control-flow in `DenseLayout` (8742)
- Switch to primitive support in QNSPSA (8682)
- add controlflow handling to CheckMap transpiler pass. (8793)
- Add BackendSampler for Sampler from an arbitrary backend (8668)
- Add backend estimator for estimator from an arbitrary backend (8736)
- Sampler-based VQE for diagonal operators, plus QAOA (8669)
- Make VF2Layout and VF2PostLayout work with control flow (8804)
- Add control-flow support to "properties" transpiler passes (8763)
- Implement eigensolvers (VQD) with primitives (8640)
- Clifford does not use StabilizerTable as internal data and PendingDeprecation of PauliTable and StabilizerTable (7269)
- add control flow support to UnitarySynthesis pass (8565)
- Add conversion transpiler pass from `c_if` to `IfElseOp` (8764)
- Parameter handling in SparsePauliOp (8620)
- Migrating AdaptVQE to Qiskit Terra (7930)
- Add BackendV2Converter class for treating BackendV1 as BackendV2 (8759)
- Add optimization to quantum shannon decomposition (8092)
- VQE implementation with estimator primitive (8702)
- Remove symbolic pulse subclass implementation (8278)
- Improving memory consumption of DagDependency when lists of transitive predecessors and successors are not required (8525)
- Rewrite Amplitude Estimators with Primitives (8656)
- Quantum Phase Estimation algorithms with primitives. (8666)
- Implemented TrotterQRTE algorithm with primitives. (8706)
- Support `Sampler` in `Grover` (8647)
- Implemented PVQD algorithm with primitives. (8705)
- adding FakeGeneva (8322)
- Add FakeAuckland backend to fake provider (8467)
- Add FakeOslo backend to fake provider (8358)
- adding FakePerth (8344)
- Allow DAG-node substitution without overriding conditions (8615)
- Adds observable evaluator with primitives. (8683)
- Edge coloring for the Commuting2qGateRouter (8341)
- Pulse reference mechanism (8005)
- Add BaseResult functionality to primitives module (8091)
- Time Evolution Framework with primitives. (8681)
- Add CS, CSdg and CCZ gates to the CNOTDihedral class (8673)
- feat: support sum(LinearMixin) (8722)
- Default run_options for Primitives (8513)
- Gradients with the primitives (8528)
- Fidelity interface using primitives (8303)
- Add curve fill control option to pulse drawer (8658)
- Add ResetAfterMeasureSimplification transpiler pass (8330)
- Enable multiple parallel seed trials for SabreSwap (8572)
- Implements two-step tapering (8590)
- Add stage plugin interface for transpile (8305)
- Steppable Optimizer (8170)
- Add CS and CCZ gates (8583)
- Variational Quantum Time Evolution algorithm. (8152)
- Add barrier labels and display in 3 circuit drawers (8440)
- Adding Cliffords to QuantumCircuits as Operations (7966)
- Improve the performance of taper in opflow (8410)
- Refactoring commutativity analysis and a new commutative inverse cancellation transpiler pass (8184)
- Add run method to primitives (8382)
- Projected Variational Quantum Dynamics (8304)
- Add optimization for TwoLocal synthesis when entanglement='full' (8335)
- Reimplement SabreSwap heuristic scoring in Rust (7977)
- Tensored fitter (8345)
- Add wire_order option to all circuit drawers to allow defining the order of the wires (8173)
- Added argsort and sort method to SparsePauliOp (8016)
- add atol parameter to SparsePauliOp.equiv (8281)
- Combine circuits with clbits onto those with none (7823)
- Add shots option to primitives (8137)
Changed
- Fix transpile() for control flow operations with a Target/BackendV2 (8852) (8889)
- Remove tweedledum from macOS arm64 immediately (8849)
- Fix reverse permutation for transpiled circuits in Operator.from_circuit (8802)
- Remove pulse defaults for old fake 20q backends (8665)
- Use Sabre by default for optimization levels 1 and 2 (8552)
- Remove symbolic pulse subclass implementation (8278)
- Quantum Phase Estimation algorithms with primitives. (8666)
- Support `Sampler` in `Grover` (8647)
- Update `ProbDistribution` and `QuasiDistribution` to store the number of bits if bitstrings w/o prefix are given (8464)
- Fix handling of holes in physical bits list in Layout (8767)
- Default set to turn off approximation_degree (8595)
- Prepare for removal of `tweedledum` as a requirement (8738)
- Pulse reference mechanism (8005)
- Move circuit drawer files to `qiskit.visualization.circuit` (8306)
- Reimplement SabreSwap heuristic scoring in Rust (7977)
Removed
- Remove deprecated pulse-builder contexts (8697)
- Remove deprecated methods and arguments in quantum_info (8510)
- Fix ``maxfun`` default in ``L_BFGS`` (8285)
- Argument `epsilon` and `factr` of optimizers `L_BFGS_B` and `factr` of `P_BFGS` has been removed (8210)
- Deprecated `QiskitIndexError` removed (8209)
Fixed
- Fix transpile() for control flow operations with a Target/BackendV2 (8852) (8889)
- Fix pauli.evolve dtype casting error (8877) (8884)
- Modify preset pass managers for control-flow support (8830)
- Fix handling of 1q gates in UnitarySynthesis with target (8847)
- Fix DenseLayout when loose bits are present in input circuit (8843)
- Fix reverse permutation for transpiled circuits in Operator.from_circuit (8802)
- Introduce observable key for Estimator (8837)
- Resolve classical conditions in `QuantumCircuit.while_loop` (8833)
- Update GateDirection and checker for control flow (8822)
- "cregbundle set to False" warning should not raised when no classical bits are involved (8689)
- Add control-flow support to "properties" transpiler passes (8763)
- Fix for `None` in `state_to_latex` latex output (8273)
- Fix flipping of gate direction in transpiler for CZ gate (8625)
- add state_to_latex prefix kwarg (8461)
- Fix handling of holes in physical bits list in Layout (8767)
- Fix printing an empty PauliList (7712)
- Add internal routine for canonicalisation of control-flow builders (8627)
- Composite key for Primitives (8604)
- Raise error for missing bounds in optimizer SNOBFIT (8638)
- Fix OpenQASM 3 built-ins with classical conditions (8731)
- Clean up text drawer compression issues (8588)
- Use np.array_split instead of np.split to support uneven splits in spsa._batch_evaluate (8634)
- Fix LaTeX drawer on split-filesystem systems (8629)
- Fix decomposition for a single qubit and clbit (8614)
- Fix VQD callback not being used (8576)
- Add logic to return channels to FakeBackendV2 (8444)
- Fix QuantumCircuit.compose within control-flow scopes (8570)
- Fix QPY serialisation of ControlledGate with open controls (8571)
- accept single qubit in initialize to fix 8408 (8463)
- Fix global phase in inverse of UCGate (8508)
- Changing aer_simulator_statevector checking method (8411)
- Fix ``ParameterExpression.is_real`` if ``symengine`` is installed (8456)
- Fix MPL and LaTeX circuit drawer when `idle_wires=False` and there are barriers (8321)
- Fix converting VectorStateFn to a CircuitStateFn (8405)
- Fix handling of numpy arrays for indices in marginal_distribution (8288)
- Fix `EvolvedOp.to_instruction` (8384)
- Fix `Optimizer` reconstruction from `settings` (8381)
- Fix Uc gate global phase (8231)
- Fix bug in circuit decompose (8364)
- Fix pairwise entanglement (8346)
- Switched to `StandardScaler` from deprecated `normalize` in `NaturalGradient` (8299)
- fix limit_amplitude bug (8308)
- Fix UnitaryGate.qasm() with unused qubits (8234) (8243)
- Fix UnitaryGate.qasm() with unused qubits (8234)