59 lines
2.0 KiB
Plaintext
59 lines
2.0 KiB
Plaintext
---
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title: MatrixExponential
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description: API reference for qiskit.synthesis.MatrixExponential
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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.synthesis.MatrixExponential
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---
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# MatrixExponential
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<Class id="qiskit.synthesis.MatrixExponential" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.21/qiskit/synthesis/evolution/matrix_synthesis.py" signature="MatrixExponential" modifiers="class">
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Bases: [`qiskit.synthesis.evolution.evolution_synthesis.EvolutionSynthesis`](qiskit.synthesis.EvolutionSynthesis "qiskit.synthesis.evolution.evolution_synthesis.EvolutionSynthesis")
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Exact operator evolution via matrix exponentiation and unitary synthesis.
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This class synthesis the exponential of operators by calculating their exponentially-sized matrix representation and using exact matrix exponentiation followed by unitary synthesis to obtain a circuit. This process is not scalable and serves as comparison or benchmark for small systems.
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## Methods
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### synthesize
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<Function id="qiskit.synthesis.MatrixExponential.synthesize" signature="MatrixExponential.synthesize(evolution)">
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Synthesize an `qiskit.circuit.library.PauliEvolutionGate`.
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**Parameters**
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**evolution** ([*PauliEvolutionGate*](qiskit.circuit.library.PauliEvolutionGate "qiskit.circuit.library.PauliEvolutionGate")) – The evolution gate to synthesize.
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**Returns**
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A circuit implementing the evolution.
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**Return type**
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[QuantumCircuit](qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit")
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</Function>
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## Attributes
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### settings
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<Attribute id="qiskit.synthesis.MatrixExponential.settings">
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Return the settings in a dictionary, which can be used to reconstruct the object.
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**Return type**
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`Dict`\[`str`, `Any`]
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**Returns**
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A dictionary containing the settings of this product formula.
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**Raises**
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**NotImplementedError** – The interface does not implement this method.
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</Attribute>
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</Class>
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