37 lines
1.6 KiB
Plaintext
37 lines
1.6 KiB
Plaintext
---
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title: EvolutionBase
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description: API reference for qiskit.opflow.evolutions.EvolutionBase
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in_page_toc_min_heading_level: 1
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python_api_type: class
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python_api_name: qiskit.opflow.evolutions.EvolutionBase
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---
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# EvolutionBase
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<Class id="qiskit.opflow.evolutions.EvolutionBase" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.22/qiskit/opflow/evolutions/evolution_base.py" signature="EvolutionBase" modifiers="class">
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Bases: [`qiskit.opflow.converters.converter_base.ConverterBase`](qiskit.opflow.converters.ConverterBase "qiskit.opflow.converters.converter_base.ConverterBase"), `abc.ABC`
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A base for Evolution converters. Evolutions are converters which traverse an Operator tree, replacing any `EvolvedOp` e with a Schrodinger equation-style evolution `CircuitOp` equalling or approximating the matrix exponential of -i \* the Operator contained inside (e.primitive). The Evolutions are essentially implementations of Hamiltonian Simulation algorithms, including various methods for Trotterization.
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## Methods Defined Here
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### convert
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<Function id="qiskit.opflow.evolutions.EvolutionBase.convert" signature="EvolutionBase.convert(operator)" modifiers="abstract">
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Traverse the operator, replacing any `EvolutionOps` with their equivalent evolution `CircuitOps`.
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> #### Args:
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>
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> operator: The Operator to convert.
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**Return type**
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[`OperatorBase`](qiskit.opflow.OperatorBase "qiskit.opflow.operator_base.OperatorBase")
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**Returns**
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The converted Operator, with `EvolutionOps` replaced by `CircuitOps`.
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</Function>
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</Class>
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