46 lines
2.4 KiB
Plaintext
46 lines
2.4 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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# qiskit.opflow\.evolutions.EvolutionBase
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<Class id="qiskit.opflow.evolutions.EvolutionBase" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.17/qiskit/opflow/evolutions/evolution_base.py" signature="EvolutionBase" modifiers="class">
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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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### \_\_init\_\_
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<Function id="qiskit.opflow.evolutions.EvolutionBase.__init__" signature="__init__()">
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Initialize self. See help(type(self)) for accurate signature.
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</Function>
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## Methods
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| ----------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
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| [`__init__`](#qiskit.opflow.evolutions.EvolutionBase.__init__ "qiskit.opflow.evolutions.EvolutionBase.__init__")() | Initialize self. |
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| [`convert`](#qiskit.opflow.evolutions.EvolutionBase.convert "qiskit.opflow.evolutions.EvolutionBase.convert")(operator) | Traverse the operator, replacing any `EvolutionOps` with their equivalent evolution `CircuitOps`. |
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### convert
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<Function id="qiskit.opflow.evolutions.EvolutionBase.convert" signature="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`
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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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