--- title: passes (v1.3) description: API reference for qiskit.transpiler.passes in qiskit v1.3 source: https://quantum.cloud.ibm.com/docs/en/api/qiskit/1.3/transpiler_passes --- # Transpiler Passes `qiskit.transpiler.passes` ## Layout Selection (Placement) | | | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- | | [`SetLayout`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.SetLayout "qiskit.transpiler.passes.SetLayout")(\*args, \*\*kwargs) | Set the `layout` property to the given layout. | | [`TrivialLayout`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.TrivialLayout "qiskit.transpiler.passes.TrivialLayout")(\*args, \*\*kwargs) | Choose a Layout by assigning `n` circuit qubits to device qubits `0, .., n-1`. | | [`DenseLayout`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.DenseLayout "qiskit.transpiler.passes.DenseLayout")(\*args, \*\*kwargs) | Choose a Layout by finding the most connected subset of qubits. | | [`SabreLayout`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.SabreLayout "qiskit.transpiler.passes.SabreLayout")(\*args, \*\*kwargs) | Choose a Layout via iterative bidirectional routing of the input circuit. | | [`CSPLayout`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CSPLayout "qiskit.transpiler.passes.CSPLayout")(\*args, \*\*kwargs) | If possible, chooses a Layout as a CSP, using backtracking. | | [`VF2Layout`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.VF2Layout "qiskit.transpiler.passes.VF2Layout")(\*args, \*\*kwargs) | A pass for choosing a Layout of a circuit onto a Coupling graph, as a subgraph isomorphism problem, solved by VF2++. | | [`ApplyLayout`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ApplyLayout "qiskit.transpiler.passes.ApplyLayout")(\*args, \*\*kwargs) | Transform a circuit with virtual qubits into a circuit with physical qubits. | | [`Layout2qDistance`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Layout2qDistance "qiskit.transpiler.passes.Layout2qDistance")(\*args, \*\*kwargs) | Evaluate how good the layout selection was. | | [`EnlargeWithAncilla`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.EnlargeWithAncilla "qiskit.transpiler.passes.EnlargeWithAncilla")(\*args, \*\*kwargs) | Extend the dag with virtual qubits that are in layout but not in the circuit yet. | | [`FullAncillaAllocation`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.FullAncillaAllocation "qiskit.transpiler.passes.FullAncillaAllocation")(\*args, \*\*kwargs) | Allocate all idle nodes from the coupling map or target as ancilla on the layout. | | [`SabrePreLayout`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.SabrePreLayout "qiskit.transpiler.passes.SabrePreLayout")(\*args, \*\*kwargs) | Choose a starting layout to use for additional Sabre layout trials. | ## Routing | | | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------- | | [`BasicSwap`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.BasicSwap "qiskit.transpiler.passes.BasicSwap")(\*args, \*\*kwargs) | Map (with minimum effort) a DAGCircuit onto a `coupling_map` adding swap gates. | | [`LookaheadSwap`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.LookaheadSwap "qiskit.transpiler.passes.LookaheadSwap")(\*args, \*\*kwargs) | Map input circuit onto a backend topology via insertion of SWAPs. | | [`StochasticSwap`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.StochasticSwap "qiskit.transpiler.passes.StochasticSwap")(\*args, \*\*kwargs) | Map a DAGCircuit onto a coupling\_map adding swap gates. | | [`SabreSwap`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.SabreSwap "qiskit.transpiler.passes.SabreSwap")(\*args, \*\*kwargs) | Map input circuit onto a backend topology via insertion of SWAPs. | | [`Commuting2qGateRouter`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Commuting2qGateRouter "qiskit.transpiler.passes.Commuting2qGateRouter")(\*args, \*\*kwargs) | A class to swap route one or more commuting gates to the coupling map. | | [`StarPreRouting`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.StarPreRouting "qiskit.transpiler.passes.StarPreRouting")(\*args, \*\*kwargs) | Run star to linear pre-routing | ## Basis Change | | | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------- | | [`BasisTranslator`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.BasisTranslator "qiskit.transpiler.passes.BasisTranslator")(\*args, \*\*kwargs) | Translates gates to a target basis by searching for a set of translations from a given EquivalenceLibrary. | | [`Decompose`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Decompose "qiskit.transpiler.passes.Decompose")(\*args, \*\*kwargs) | Expand a gate in a circuit using its decomposition rules. | | [`TranslateParameterizedGates`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.TranslateParameterizedGates "qiskit.transpiler.passes.TranslateParameterizedGates")(\*args, \*\*kwargs) | Translate parameterized gates to a supported basis set. | | [`Unroll3qOrMore`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Unroll3qOrMore "qiskit.transpiler.passes.Unroll3qOrMore")(\*args, \*\*kwargs) | Recursively expands 3q+ gates until the circuit only contains 2q or 1q gates. | | [`UnrollCustomDefinitions`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.UnrollCustomDefinitions "qiskit.transpiler.passes.UnrollCustomDefinitions")(\*args, \*\*kwargs) | Unrolls instructions with custom definitions. | ## Optimizations | | | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [`Optimize1qGates`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Optimize1qGates "qiskit.transpiler.passes.Optimize1qGates")(\*args, \*\*kwargs) | Optimize chains of single-qubit u1, u2, u3 gates by combining them into a single gate. | | [`Optimize1qGatesDecomposition`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Optimize1qGatesDecomposition "qiskit.transpiler.passes.Optimize1qGatesDecomposition")(\*args, \*\*kwargs) | Optimize chains of single-qubit gates by combining them into a single gate. | | [`Collect1qRuns`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Collect1qRuns "qiskit.transpiler.passes.Collect1qRuns")(\*args, \*\*kwargs) | Collect one-qubit subcircuits. | | [`Collect2qBlocks`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Collect2qBlocks "qiskit.transpiler.passes.Collect2qBlocks")(\*args, \*\*kwargs) | Collect two-qubit subcircuits. | | [`CollectMultiQBlocks`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CollectMultiQBlocks "qiskit.transpiler.passes.CollectMultiQBlocks")(\*args, \*\*kwargs) | Collect sequences of uninterrupted gates acting on groups of qubits. | | [`CollectAndCollapse`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CollectAndCollapse "qiskit.transpiler.passes.CollectAndCollapse")(\*args, \*\*kwargs) | A general transpiler pass to collect and to consolidate blocks of nodes in a circuit. | | [`CollectLinearFunctions`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CollectLinearFunctions "qiskit.transpiler.passes.CollectLinearFunctions")(\*args, \*\*kwargs) | Collect blocks of linear gates ([`CXGate`](/docs/api/qiskit/1.3/qiskit.circuit.library.CXGate "qiskit.circuit.library.CXGate") and [`SwapGate`](/docs/api/qiskit/1.3/qiskit.circuit.library.SwapGate "qiskit.circuit.library.SwapGate") gates) and replaces them by linear functions ([`LinearFunction`](/docs/api/qiskit/1.3/qiskit.circuit.library.LinearFunction "qiskit.circuit.library.LinearFunction")). | | [`CollectCliffords`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CollectCliffords "qiskit.transpiler.passes.CollectCliffords")(\*args, \*\*kwargs) | Collects blocks of Clifford gates and replaces them by a [`Clifford`](/docs/api/qiskit/1.3/qiskit.quantum_info.Clifford "qiskit.quantum_info.Clifford") object. | | [`ConsolidateBlocks`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ConsolidateBlocks "qiskit.transpiler.passes.ConsolidateBlocks")(\*args, \*\*kwargs) | Replace each block of consecutive gates by a single Unitary node. | | [`CXCancellation`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CXCancellation "qiskit.transpiler.passes.CXCancellation")(\*args, \*\*kwargs) | Cancel back-to-back `cx` gates in dag. | | [`InverseCancellation`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.InverseCancellation "qiskit.transpiler.passes.InverseCancellation")(\*args, \*\*kwargs) | Cancel specific Gates which are inverses of each other when they occur back-to- back. | | [`CommutationAnalysis`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CommutationAnalysis "qiskit.transpiler.passes.CommutationAnalysis")(\*args, \*\*kwargs) | Analysis pass to find commutation relations between DAG nodes. | | [`CommutativeCancellation`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CommutativeCancellation "qiskit.transpiler.passes.CommutativeCancellation")(\*args, \*\*kwargs) | Cancel the redundant (self-adjoint) gates through commutation relations. | | [`CommutativeInverseCancellation`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CommutativeInverseCancellation "qiskit.transpiler.passes.CommutativeInverseCancellation")(\*args, \*\*kwargs) | Cancel pairs of inverse gates exploiting commutation relations. | | [`Optimize1qGatesSimpleCommutation`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Optimize1qGatesSimpleCommutation "qiskit.transpiler.passes.Optimize1qGatesSimpleCommutation")(\*args, \*\*kwargs) | Optimizes 1Q gate strings interrupted by 2Q gates by commuting the components and resynthesizing the results. | | [`RemoveDiagonalGatesBeforeMeasure`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.RemoveDiagonalGatesBeforeMeasure "qiskit.transpiler.passes.RemoveDiagonalGatesBeforeMeasure")(\*args, \*\*kwargs) | Remove diagonal gates (including diagonal 2Q gates) before a measurement. | | [`RemoveResetInZeroState`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.RemoveResetInZeroState "qiskit.transpiler.passes.RemoveResetInZeroState")(\*args, \*\*kwargs) | Remove reset gate when the qubit is in zero state. | | [`RemoveFinalReset`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.RemoveFinalReset "qiskit.transpiler.passes.RemoveFinalReset")(\*args, \*\*kwargs) | Remove reset when it is the final instruction on a qubit wire. | | [`HoareOptimizer`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.HoareOptimizer "qiskit.transpiler.passes.HoareOptimizer")(\*args, \*\*kwargs) | This is a transpiler pass using Hoare logic circuit optimization. | | [`TemplateOptimization`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.TemplateOptimization "qiskit.transpiler.passes.TemplateOptimization")(\*args, \*\*kwargs) | Class for the template optimization pass. | | [`EchoRZXWeylDecomposition`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.EchoRZXWeylDecomposition "qiskit.transpiler.passes.EchoRZXWeylDecomposition")(\*args, \*\*kwargs) | Rewrite two-qubit gates using the Weyl decomposition. | | [`ResetAfterMeasureSimplification`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ResetAfterMeasureSimplification "qiskit.transpiler.passes.ResetAfterMeasureSimplification")(\*args, \*\*kwargs) | This pass replaces reset after measure with a conditional X gate. | | [`OptimizeCliffords`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.OptimizeCliffords "qiskit.transpiler.passes.OptimizeCliffords")(\*args, \*\*kwargs) | Combine consecutive Cliffords over the same qubits. | | [`ElidePermutations`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ElidePermutations "qiskit.transpiler.passes.ElidePermutations")(\*args, \*\*kwargs) | Remove permutation operations from a pre-layout circuit | | [`NormalizeRXAngle`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.NormalizeRXAngle "qiskit.transpiler.passes.NormalizeRXAngle")(\*args, \*\*kwargs) | Normalize theta parameter of RXGate instruction. | | [`OptimizeAnnotated`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.OptimizeAnnotated "qiskit.transpiler.passes.OptimizeAnnotated")(\*args, \*\*kwargs) | Optimization pass on circuits with annotated operations. | | [`Split2QUnitaries`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Split2QUnitaries "qiskit.transpiler.passes.Split2QUnitaries")(\*args, \*\*kwargs) | Attempt to splits two-qubit unitaries in a [`DAGCircuit`](/docs/api/qiskit/1.3/qiskit.dagcircuit.DAGCircuit "qiskit.dagcircuit.DAGCircuit") into two single-qubit gates. | | [`RemoveIdentityEquivalent`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.RemoveIdentityEquivalent "qiskit.transpiler.passes.RemoveIdentityEquivalent")(\*args, \*\*kwargs) | Remove gates with negligible effects. | ## Calibration | | | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ | | [`PulseGates`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.PulseGates "qiskit.transpiler.passes.PulseGates")(\*args, \*\*kwargs) | Pulse gate adding pass. | | [`RZXCalibrationBuilder`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.RZXCalibrationBuilder "qiskit.transpiler.passes.RZXCalibrationBuilder")(\*args, \*\*kwargs) | Creates calibrations for RZXGate(theta) by stretching and compressing Gaussian square pulses in the CX gate. | | [`RZXCalibrationBuilderNoEcho`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.RZXCalibrationBuilderNoEcho "qiskit.transpiler.passes.RZXCalibrationBuilderNoEcho")(\*args, \*\*kwargs) | Creates calibrations for RZXGate(theta) by stretching and compressing Gaussian square pulses in the CX gate. | | [`RXCalibrationBuilder`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.RXCalibrationBuilder "qiskit.transpiler.passes.RXCalibrationBuilder")(\*args, \*\*kwargs) | Add single-pulse RX calibrations that are bootstrapped from the SX calibration. | ### rzx\_templates `qiskit.transpiler.passes.rzx_templates(template_list=None)` [GitHub](https://github.com/Qiskit/qiskit/tree/stable/1.3/qiskit/transpiler/passes/calibration/rzx_templates.py#L23-L51) Convenience function to get the cost\_dict and templates for template matching. **Parameters** **template\_list** ([*List*](https://docs.python.org/3/library/typing.html#typing.List)*\[*[*str*](https://docs.python.org/3/library/stdtypes.html#str)*] | None*) – List of instruction names. **Returns** Decomposition templates and cost values. **Return type** [*Dict*](https://docs.python.org/3/library/typing.html#typing.Dict) ## Scheduling | | | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- | | [`TimeUnitConversion`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.TimeUnitConversion "qiskit.transpiler.passes.TimeUnitConversion")(\*args, \*\*kwargs) | Choose a time unit to be used in the following time-aware passes, and make all circuit time units consistent with that. | | [`ALAPScheduleAnalysis`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ALAPScheduleAnalysis "qiskit.transpiler.passes.ALAPScheduleAnalysis")(\*args, \*\*kwargs) | ALAP Scheduling pass, which schedules the **stop** time of instructions as late as possible. | | [`ASAPScheduleAnalysis`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ASAPScheduleAnalysis "qiskit.transpiler.passes.ASAPScheduleAnalysis")(\*args, \*\*kwargs) | ASAP Scheduling pass, which schedules the start time of instructions as early as possible. | | [`PadDynamicalDecoupling`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.PadDynamicalDecoupling "qiskit.transpiler.passes.PadDynamicalDecoupling")(\*args, \*\*kwargs) | Dynamical decoupling insertion pass. | | [`PadDelay`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.PadDelay "qiskit.transpiler.passes.PadDelay")(\*args, \*\*kwargs) | Padding idle time with Delay instructions. | | [`ConstrainedReschedule`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ConstrainedReschedule "qiskit.transpiler.passes.ConstrainedReschedule")(\*args, \*\*kwargs) | Rescheduler pass that updates node start times to conform to the hardware alignments. | | [`ValidatePulseGates`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ValidatePulseGates "qiskit.transpiler.passes.ValidatePulseGates")(\*args, \*\*kwargs) | Check custom gate length. | | [`InstructionDurationCheck`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.InstructionDurationCheck "qiskit.transpiler.passes.InstructionDurationCheck")(\*args, \*\*kwargs) | Duration validation pass for reschedule. | | [`SetIOLatency`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.SetIOLatency "qiskit.transpiler.passes.SetIOLatency")(\*args, \*\*kwargs) | Set IOLatency information to the input circuit. | | [`ALAPSchedule`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ALAPSchedule "qiskit.transpiler.passes.ALAPSchedule")(\*args, \*\*kwargs) | ALAP Scheduling pass, which schedules the **stop** time of instructions as late as possible. | | [`ASAPSchedule`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ASAPSchedule "qiskit.transpiler.passes.ASAPSchedule")(\*args, \*\*kwargs) | ASAP Scheduling pass, which schedules the start time of instructions as early as possible.. | | [`DynamicalDecoupling`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.DynamicalDecoupling "qiskit.transpiler.passes.DynamicalDecoupling")(\*args, \*\*kwargs) | Dynamical decoupling insertion pass. | | [`AlignMeasures`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.AlignMeasures "qiskit.transpiler.passes.AlignMeasures")(\*args, \*\*kwargs) | Measurement alignment. | ## Circuit Analysis | | | | ------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [`Width`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Width "qiskit.transpiler.passes.Width")(\*args, \*\*kwargs) | Calculate the width of a DAG circuit. | | [`Depth`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Depth "qiskit.transpiler.passes.Depth")(\*args, \*\*kwargs) | Calculate the depth of a DAG circuit. | | [`Size`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.Size "qiskit.transpiler.passes.Size")(\*args, \*\*kwargs) | Calculate the size of a DAG circuit. | | [`CountOps`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CountOps "qiskit.transpiler.passes.CountOps")(\*args, \*\*kwargs) | Count the operations in a DAG circuit. | | [`CountOpsLongestPath`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CountOpsLongestPath "qiskit.transpiler.passes.CountOpsLongestPath")(\*args, \*\*kwargs) | Count the operations on the longest path in a [`DAGCircuit`](/docs/api/qiskit/1.3/qiskit.dagcircuit.DAGCircuit "qiskit.dagcircuit.DAGCircuit"). | | [`NumTensorFactors`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.NumTensorFactors "qiskit.transpiler.passes.NumTensorFactors")(\*args, \*\*kwargs) | Calculate the number of tensor factors of a DAG circuit. | | [`DAGLongestPath`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.DAGLongestPath "qiskit.transpiler.passes.DAGLongestPath")(\*args, \*\*kwargs) | Return the longest path in a [`DAGCircuit`](/docs/api/qiskit/1.3/qiskit.dagcircuit.DAGCircuit "qiskit.dagcircuit.DAGCircuit") as a list of [`DAGOpNode`](/docs/api/qiskit/1.3/qiskit.dagcircuit.DAGOpNode "qiskit.dagcircuit.DAGOpNode")s, [`DAGInNode`](/docs/api/qiskit/1.3/qiskit.dagcircuit.DAGInNode "qiskit.dagcircuit.DAGInNode")s, and [`DAGOutNode`](/docs/api/qiskit/1.3/qiskit.dagcircuit.DAGOutNode "qiskit.dagcircuit.DAGOutNode")s. | ## Synthesis The synthesis transpiler plugin documentation can be found in the [`qiskit.transpiler.passes.synthesis.plugin`](/docs/api/qiskit/1.3/transpiler_synthesis_plugins#module-qiskit.transpiler.passes.synthesis.plugin "qiskit.transpiler.passes.synthesis.plugin") page. | | | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [`UnitarySynthesis`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.UnitarySynthesis "qiskit.transpiler.passes.UnitarySynthesis")(\*args, \*\*kwargs) | Synthesize gates according to their basis gates. | | [`LinearFunctionsToPermutations`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.LinearFunctionsToPermutations "qiskit.transpiler.passes.LinearFunctionsToPermutations")(\*args, \*\*kwargs) | Promotes linear functions to permutations when possible. | | [`HighLevelSynthesis`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.HighLevelSynthesis "qiskit.transpiler.passes.HighLevelSynthesis")(\*args, \*\*kwargs) | Synthesize higher-level objects and unroll custom definitions. | | [`HLSConfig`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.HLSConfig "qiskit.transpiler.passes.HLSConfig")(\[use\_default\_on\_unspecified, ...]) | The high-level-synthesis config allows to specify a list of "methods" used by [`HighLevelSynthesis`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.HighLevelSynthesis "qiskit.transpiler.passes.HighLevelSynthesis") transformation pass to synthesize different types of higher-level objects. | | [`SolovayKitaev`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.SolovayKitaev "qiskit.transpiler.passes.SolovayKitaev")(\*args, \*\*kwargs) | Approximately decompose 1q gates to a discrete basis using the Solovay-Kitaev algorithm. | ## Post Layout These are post qubit selection. | | | | ------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- | | [`VF2PostLayout`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.VF2PostLayout "qiskit.transpiler.passes.VF2PostLayout")(\*args, \*\*kwargs) | A pass for improving an existing Layout after transpilation of a circuit onto a Coupling graph, as a subgraph isomorphism problem, solved by VF2++. | ## Additional Passes | | | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------- | | [`CheckMap`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CheckMap "qiskit.transpiler.passes.CheckMap")(\*args, \*\*kwargs) | Check if a DAG circuit is already mapped to a coupling map. | | [`CheckGateDirection`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.CheckGateDirection "qiskit.transpiler.passes.CheckGateDirection")(\*args, \*\*kwargs) | Check if the two-qubit gates follow the right direction with respect to the coupling map. | | [`GateDirection`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.GateDirection "qiskit.transpiler.passes.GateDirection")(\*args, \*\*kwargs) | Modify asymmetric gates to match the hardware coupling direction. | | [`MergeAdjacentBarriers`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.MergeAdjacentBarriers "qiskit.transpiler.passes.MergeAdjacentBarriers")(\*args, \*\*kwargs) | Return a circuit with any adjacent barriers merged together. | | [`RemoveBarriers`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.RemoveBarriers "qiskit.transpiler.passes.RemoveBarriers")(\*args, \*\*kwargs) | Return a circuit with any barrier removed. | | [`BarrierBeforeFinalMeasurements`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.BarrierBeforeFinalMeasurements "qiskit.transpiler.passes.BarrierBeforeFinalMeasurements")(\*args, \*\*kwargs) | Add a barrier before final measurements. | | [`RemoveFinalMeasurements`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.RemoveFinalMeasurements "qiskit.transpiler.passes.RemoveFinalMeasurements")(\*args, \*\*kwargs) | Remove final measurements and barriers at the end of a circuit. | | [`DAGFixedPoint`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.DAGFixedPoint "qiskit.transpiler.passes.DAGFixedPoint")(\*args, \*\*kwargs) | Check if the DAG has reached a fixed point. | | [`FixedPoint`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.FixedPoint "qiskit.transpiler.passes.FixedPoint")(\*args, \*\*kwargs) | Check if a property reached a fixed point. | | [`MinimumPoint`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.MinimumPoint "qiskit.transpiler.passes.MinimumPoint")(\*args, \*\*kwargs) | Check if the DAG has reached a relative semi-stable point over previous runs | | [`ContainsInstruction`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ContainsInstruction "qiskit.transpiler.passes.ContainsInstruction")(\*args, \*\*kwargs) | An analysis pass to detect if the DAG contains a specific instruction. | | [`GatesInBasis`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.GatesInBasis "qiskit.transpiler.passes.GatesInBasis")(\*args, \*\*kwargs) | Check if all gates in a DAG are in a given set of gates | | [`ConvertConditionsToIfOps`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.ConvertConditionsToIfOps "qiskit.transpiler.passes.ConvertConditionsToIfOps")(\*args, \*\*kwargs) | Convert instructions whose `condition` attribute is set to a non-`None` value into the equivalent single-statement `IfElseBlock`. | | [`UnrollForLoops`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.UnrollForLoops "qiskit.transpiler.passes.UnrollForLoops")(\*args, \*\*kwargs) | `UnrollForLoops` transpilation pass unrolls for-loops when possible. | | [`FilterOpNodes`](/docs/api/qiskit/1.3/qiskit.transpiler.passes.FilterOpNodes "qiskit.transpiler.passes.FilterOpNodes")(\*args, \*\*kwargs) | Remove all operations that match a filter function |